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Old     (wakebrdr94)      Join Date: Jul 2010       07-12-2010, 12:30 PM Reply   
anyone run synthetic in their boat? I have a 2002 vlx, original owner, have always used penzoil 5-30 conventional. any thoughts?
Old     (guido)      Join Date: Jul 2002       07-12-2010, 12:36 PM Reply   
Synthetic oil is definitely superior in high heat, high stress situations. There are two ways of looking at it with boats: 1) they have unlimited access to cool water for engine cooling which keeps oil temps down, but 2) they're consistently running high rpm's and heavy loads.

Personally I'd rather be overkill with my engine oil. Change it frequently and use the best quality product you can. I've always run synthetics in my boats. I also tend to go to a 10-40 weight. Something a bit heavier since boats rarely run in cold temperatures.
Old     (05mobiuslsv)      Join Date: Apr 2006       07-12-2010, 12:51 PM Reply   
Synthetic is a complete waste of money for a boat. You can't take advantage of any of the benefits a synthetic oil offers in a boat.
Old     (hatepain)      Join Date: Aug 2006       07-12-2010, 1:17 PM Reply   
Beyond the fact that the oil is chnaged so frequently can you please expand on that Nu Bu?
Old     (05mobiuslsv)      Join Date: Apr 2006       07-12-2010, 2:03 PM Reply   
Quote:
Originally Posted by hatepain View Post
Beyond the fact that the oil is chnaged so frequently can you please expand on that Nu Bu?
Sure. The benefit of better peformance under higher pressure and higher temperature operation doesn't apply because they don't exist on our kinds of boats. Can't take advantage of the longer drain intervals unless you want to void your engine warranty. Better fuel economy, I don't think I need to address that one.

I'm not saying synthetics aren't good oils, I'm saying they are a waste of money. If the manufacturer of the motor that was in my boat required synthetic I'd use it, but that's the only reason.
Old     (boarditup)      Join Date: Jan 2004       07-12-2010, 1:35 PM Reply   
Nu Bu is both right and wrong. Conventional oils work great and do not tend to break down in a marine engine due to the relatively cool temps they run at. However, synthetic oils prevent sludge build up much better than any conventional. Sludge does not need high temps to form, just age since all conventional oils have a limited amount of wax in them (from the refining process). Synthetics do not have the wax leftovers, so they form less sludge over time. From my experience the best synthetic oils are Penzoil Platinum or NAPA house brand - for the price. Buy on sale for about $20 an oil change (5-quarts). Don't stress on weight with synthetics, the exact same oil can be classified as a multitude of weights as the tend to perform well over a broad spectrum.

NAPA Gold oil filters meet all marine specs without the high cost of dealer supplied. The difference is case burst pressure.

Change oil every 50-75 hours. Change tranny lube every 200 hours after break-in.
Old     (bmartin)      Join Date: Jan 2007       07-12-2010, 1:53 PM Reply   
If your impeller is working, the engine oil will be kept cool, but those impellers seem to fail more than a water pump/radiator in a car and like to have the added protection of a synthetic. The difference in price between conventional and synthetic is less than the price of 5 gals of gas.
Old     (hayes)      Join Date: Aug 2007       07-12-2010, 5:55 PM Reply   
Mobil1 15-50 in the SAN 210 (PCM GT-40 engine).
Old     (wake_upppp)      Join Date: Nov 2003       07-12-2010, 6:25 PM Reply   
Dont run it in anything I own or have owned. Oil in my vehicles is in and out too quick to spend the extra coin on synthetics.
Old     (ajholt7)      Join Date: Apr 2009       07-16-2010, 1:05 AM Reply   
I like overkill. I run Amsoil Marine 10w-40 and an Amsoil oil filter.
Old     (ryanbush11)      Join Date: May 2003       07-16-2010, 4:27 AM Reply   
The good question is why wouldn't you run synthetic oil... just plain and simple its better... the only downside is it cost more, and lets be honest guys does an extra 20 bucks a couple times a year really matter to most of you guys with 50k-100k boat?
Old     (acurtis_ttu)      Join Date: May 2004       07-16-2010, 6:16 AM Reply   
I use regular oil in my boat, change every 50-75 hours. Have for years.
Old     (strife)      Join Date: Feb 2010       07-16-2010, 7:11 AM Reply   
Another amsoil guy here. I run amsoil 15w-40 marine in my indmar. Synthetic oil is supperior in about every category. If you want to spend the extra cash go for it!
Old     (sdub)      Join Date: Jan 2003       07-16-2010, 7:33 AM Reply   
can anybody in the know answer this question? I have heard that one downside of synthetic oil is it does not stick ( for the lack of better term ) to the engine metals as well as conv. oils. Since boats sits longer between use, compared to cars, you have more engine wear on start up when using syn. oils.

Can anybody comment on this?
Old     (trace)      Join Date: Feb 2002       07-16-2010, 7:50 AM Reply   
+1 synthetics are a waste of money IMO. I run dino oil in all my vehicles, and usually run them into the ground before I replace them. Never had an oil related failure. Frequency of oil changes is much more important than the type of oil.

Oil threads always turn into wars.
Old     (05mobiuslsv)      Join Date: Apr 2006       07-16-2010, 8:44 AM Reply   
Quote:
Originally Posted by trace View Post
+1 synthetics are a waste of money IMO. I run dino oil in all my vehicles, and usually run them into the ground before I replace them. Never had an oil related failure. Frequency of oil changes is much more important than the type of oil.

Oil threads always turn into wars.
Yup people sure do get spirited when they hear they've been waisting their money.
Old     (strife)      Join Date: Feb 2010       07-16-2010, 7:58 AM Reply   
Quote:
Frequency of oil changes is much more important than the type of oil.

Soooo true..
Old     (texastbird)      Join Date: May 2003       07-16-2010, 8:15 AM Reply   
I run Mobil1 in all my vehicles and in the boat. Don't put synthetic in old motors with cork gaskets unless you want a leak.
Old     (rallyart)      Join Date: Nov 2006       07-16-2010, 10:18 AM Reply   
S Dub, synthetics are superior for long standing periods rather than what you had heard. When an engine blows on a race track it takes much longer to clean up a synthetic than a conventional because they adhere to the surface better. They are more stable over time as the oxidation rate is less. Most synthetics flow faster when cold so on initial start up they provide lubrication to the valve train sooner than standard oils.
The other benefit in a boat is a slight reduction in drag so you have a touch more power.
NuBu is right that a cool engine operating environment does not give all the benefits you might expect in another vehicle.
If you burn or leak oil you do not want synthetic. It just adds to your expense as it burns faster and leaks quicker.

I use synthetic in my vehicles and boat. A my old, and I mean old, I/O runs conventional.
Old     (camassanger)      Join Date: Oct 2009       07-16-2010, 11:00 AM Reply   
Totally agree with Art. Synthetics are a superior chemistry and perform better in every regard. Folks can argue about whether or not a marine engine environment warrants the superior chemistry or not. I can appreciate both arguements honestly. But, for me, I use synthetic because it is better in every sense (unless you burn oil or have a leak, as Art mentions). I like to take good care of my equipment in hopes that it will take good care of me :-)
Old     (guido)      Join Date: Jul 2002       07-16-2010, 11:12 AM Reply   
Anybody that doesn't think marine life is hard on oils hasn't ever ridden in a loaded boat. Our boat gets full throttle shots for 30 seconds at a time every time we pull a rider up. It then sits at 4k rpm's at ride speed. Cruising unloaded results in 4200 rpms at 28mph. Tell me that's not hard on a 400 hp, 6.0 litre pushrod motor. For the extra few bucks I'll take synthetic.

That said, I agree that oil change frequency is more important than oil type.
Old     (strife)      Join Date: Feb 2010       07-16-2010, 11:16 AM Reply   
Quote:
It just adds to your expense as it burns faster and leaks quicker.
actually, i think you have that backwards. synthetics burn off slower. And I believe that the temperature of your engine is measuring the water temperature as it flows past the thermostat it's not actually indicating the oil temperature which of course is a lot higher than your 160/180 that your boat gauge is indicating.

Last edited by strife; 07-16-2010 at 11:24 AM.
Old     (05mobiuslsv)      Join Date: Apr 2006       07-16-2010, 11:41 AM Reply   
Quote:
Originally Posted by strife View Post
actually, i think you have that backwards. synthetics burn off slower. And I believe that the temperature of your engine is measuring the water temperature as it flows past the thermostat it's not actually indicating the oil temperature which of course is a lot higher than your 160/180 that your boat gauge is indicating.

I don't think anyone said an engine in a boat doesn't work hard, but it's heat that damages and breaks oil down and a boat simply does not run hot in comparrison to a car. Running synthetic in a boat sure as hell won't hurt anything, but most marine engine manufacturers say not to run it until after 100 hrs of use.
Old     (strife)      Join Date: Feb 2010       07-16-2010, 11:48 AM Reply   
anyone have one of those laser thermometers? it would be interesting to take some reads off your engine block and maybe under the oil filler cap with one.. Then you could get some accurate temps.
Old     (guido)      Join Date: Jul 2002       07-16-2010, 12:39 PM Reply   
It would be interesting to get some oil temperature readings. You never know.

One of my track cars actually ran cooler oil and coolant temperatures on the track than on the street. The only explanation I could come up with was the continuous airflow and high rpm's kept things circulating. That and efficient coolers (coolant and oil). I had another that worked the other way. Oil temp went to the moon on the track.

On a boat with continuous high rpm's and unlimited cooling it would be interesting to see what happens.
Old     (jlkansascity)      Join Date: Jul 2010       07-19-2010, 8:26 PM Reply   


Synthetic oil offers the same benefits in boats as it does in all other engines. Also, lots of boaters like the remote filter kits offered by Amsoil because they make changing filters much easier in the cramped engine compartments. Check it out here.

It's also funny to hear guys say it doesn't matter when you see teams like Bob Teague just win the superboat GP in Sarasota and he's sponsored by Amsoil. Once you have thousands of dollars in a boat engine why rely on oil that's a dollar a quart and the same thing my grandpa used just after he retired the horses.

Last edited by jlkansascity; 07-19-2010 at 8:31 PM. Reason: fixed typo
Old     (05mobiuslsv)      Join Date: Apr 2006       07-19-2010, 10:39 PM Reply   
Quote:
Originally Posted by jlkansascity View Post


Synthetic oil offers the same benefits in boats as it does in all other engines. Also, lots of boaters like the remote filter kits offered by Amsoil because they make changing filters much easier in the cramped engine compartments. Check it out here.

It's also funny to hear guys say it doesn't matter when you see teams like Bob Teague just win the superboat GP in Sarasota and he's sponsored by Amsoil. Once you have thousands of dollars in a boat engine why rely on oil that's a dollar a quart and the same thing my grandpa used just after he retired the horses.
I wonder why he runs it . These aren't raceboats man.
Old     (ilikebeaverandboats)      Join Date: Jul 2007       07-19-2010, 11:06 PM Reply   
Quote:
Originally Posted by 05mobiuslsv View Post
I wonder why he runs it . These aren't raceboats man.
The motors are high HP that are torqued down. The description that used to be on mercruisers site for my blackscorpion was something along the lines of it being just like their yada yada race motor but set up to produce more torque, something like that. Not all the motors are, but some of them are pretty performance oriented.


Lets just get diesels in these monsters. Torque is what we need anyways
and idk about you guys, but I <3 Torque
Old     (wake_upppp)      Join Date: Nov 2003       07-19-2010, 8:59 PM Reply   
Sponsorship = free product. Of coarse you run it when someone else is footing the bill. Best friend has 20k in his flat bottom engine. All aluminum, Brodix heads, blower, all the good stuff and pro built by one of the renound builders in the area. Recommended oil by builder = Castrol 50w racing, non synthetic. Oil type is such a small part of the overall engine building picture.
Old     (baitkiller)      Join Date: Jan 2010       07-20-2010, 4:21 AM Reply   
Different take on the whole oil thing. I wont post my resume.

I use synthetic oil in my outboard because I'm lazy and I use the hell out of my boats. I average 200 hours a year on just the little boat we use for boarding and inshore fishing. This boat runs a 2005 Suzuki 4 stroke outboard. After 100 hours run-in I switched to Amsoil in the gear case and engine. I have run the valve clearances every 200 hours and they have not budged one iota. The thing runs perfect. I change the oils once a year at around 200 -250 hours.

So the moral of the story is I pay $8 a quart so I only have to change the oil once a year.
Old     (strife)      Join Date: Feb 2010       07-20-2010, 7:00 AM Reply   
Have you read indmars recommendations for boats operating on small lakes? Because of fuel dilution they recommend 25 hour oil changes if you don't regularly run your boat at or above 4k for fifteen minutes at a time. They also mention excessive idling as a cause to this. These are reasons why you should be running a diesel oil and personally, I think a synthetic with a lot of additives.
Old     (trace)      Join Date: Feb 2002       07-20-2010, 7:33 AM Reply   
Quote:
Originally Posted by jlkansascity View Post

Synthetic oil offers the same benefits in boats as it does in all other engines. Also, lots of boaters like the remote filter kits offered by Amsoil because they make changing filters much easier in the cramped engine compartments. Check it out here.

It's also funny to hear guys say it doesn't matter when you see teams like Bob Teague just win the superboat GP in Sarasota and he's sponsored by Amsoil. Once you have thousands of dollars in a boat engine why rely on oil that's a dollar a quart and the same thing my grandpa used just after he retired the horses.
^^Welcome to Wakeworld. Interesting choice for your first post. You need to work on sounding less condescending, and less obvious with your motives if you want to sell more Amsoil. ^^

Oil war aside, I do have to question the OP's choice of weights. 5W30 is really thin - AFAIK the only real advantage is fleet fuel economy improvements. The marine motors I've been around all recommend 15W50 or 20W50.

Last edited by trace; 07-20-2010 at 7:39 AM.
Old     (ttuclint)      Join Date: Sep 2003       07-20-2010, 8:21 AM Reply   
I noticed this year Wal-Mart has a synthetic version of the Shell Rotella I have been using, might run it next year since it would only be about 10 dollars more.
Old     (wake_upppp)      Join Date: Nov 2003       07-20-2010, 8:38 AM Reply   
Unless you're getting free product, or don't care about the extra money, synthetic is a waste if you change at regular intervals, ( 25 to 50 hrs).. It's just not staying in long enough.
Old     (kevin)      Join Date: Feb 2010       07-20-2010, 11:29 PM Reply   
I would check with your dealer. I purchased my boat used last fall so I checked with the dealer to see what they recommend and for my year/model etc. they specifically said not to use synthetic just a good heavy weight oil.
Old     (strife)      Join Date: Feb 2010       07-21-2010, 6:21 AM Reply   
Quote:
I would check with your dealer. I purchased my boat used last fall so I checked with the dealer to see what they recommend and for my year/model etc. they specifically said not to use synthetic just a good heavy weight oil.
Or you can check with your engine manufacturer...indmar says it's fine after the initial 100hr break-in period.
Old     (guido)      Join Date: Jul 2002       07-21-2010, 10:23 AM Reply   
50 hour changes are a joke. We'd be changing the oil every few weeks. Go with good synthetic and change at 100hr intervals. I've never had an issue.

If you're not running synthetic, then I really like Chevron Delo 400. I've been running it in my truck for 60k miles (turbo diesel). It's good stuff and affordable.

Sparky, 25 hr intervals? Holy crap man, that'd be every 4 days or so on the water.
Old     (wake_upppp)      Join Date: Nov 2003       07-21-2010, 7:38 PM Reply   
^^^ Sorry man. No way ANY type of oil is staying in my boat for 100hrs. Plain aint gonna happen. Glad it works for you. And no way any type of oil is staying in my gas or diesel truck or any other vehicle for more that 3k. And I've never had a oil related failure either. Thats great you guys get to ride so much. 50hrs is what I tell people, but I'ts so quick and easy for me 25hrs dont bother me. Get this, I do V-drive and tranny every other oil change. See I don't have the luxury of a new boat every other year. My stuff has to last until I hit the lottery! LOL
Old     (wake_upppp)      Join Date: Nov 2003       07-21-2010, 8:40 PM Reply   
As I sit here I cant help but do some math Guido. So you guys do approximately 6 hrs a day, 4 days a week. Thats 24 hrs a week. So in a heavily loaded big block Star, I'm guessing what about 8 gph if not more? So thats 192 gallons per week times say $3.25 a gallon for premium which is roughly $624 per week or $2,496 a month in fuel. DAMN!
Old     (ajholt7)      Join Date: Apr 2009       07-21-2010, 8:40 PM Reply   
It seems that everyone thinks that the only advantage to synthetics is longer change intervals (which is not recommended in a boat). This is just not true. Synthetics have better lubricity properties than conventional oil right from the start.
Old     (wake_upppp)      Join Date: Nov 2003       07-21-2010, 9:03 PM Reply   
^^^ For the most part the benifits from synthetic are realized in the longer intervals because it doesent break down like conventional oil. But by the time conventional oil is breaking down, it's time to come out because of the alkalyds, acids, carbons and other contaminants that wind up suspended and mixed in with the oil. These by-products are a result of combustion and dont get filtered out. That is why no type of oil stays in any engine of mine for long intervals and never will. There is no real benifit for me to justify the extra dollars spent over the years. Synthetic is mostly hype. It's all in the change intervals. Carry on.
Old     (ajholt7)      Join Date: Apr 2009       07-21-2010, 9:17 PM Reply   
Quote:
Originally Posted by wake_upppp View Post
^^^ For the most part the benifits from synthetic are realized in the longer intervals because it doesent break down like conventional oil. But by the time conventional oil is breaking down, it's time to come out because of the alkalyds, acids, carbons and other contaminants that wind up suspended and mixed in with the oil. These by-products are a result of combustion and dont get filtered out. That is why no type of oil stays in any engine of mine for long intervals and never will. There is no real benifit for me to justify the extra dollars spent over the years. Synthetic is mostly hype. It's all in the change intervals. Carry on.
Like I said, synthetics are superior in lubricity even when just put in. I will stick with my Amsoil. It just makes me feel better knowing I am using a superior oil.
Old     (mendo247)      Join Date: Mar 2005       07-21-2010, 9:06 PM Reply   
I change my oil often and I run synthetic. Thats just how I roll.
Old    mojo            07-21-2010, 9:50 PM Reply   
pcm says no synthetics. def. change oil/filter every 50 hours and check the impeller also.
Old     (ajholt7)      Join Date: Apr 2009       07-21-2010, 10:07 PM Reply   
Quote:
Originally Posted by mojo View Post
pcm says no synthetics. def. change oil/filter every 50 hours and check the impeller also.
I am sure if they were asked why, their only reason would be that they have not tested their engines with it.
Old     (wake_upppp)      Join Date: Nov 2003       07-21-2010, 10:18 PM Reply   
Dont kid youself, a company like PCM that has been building engines for many years knows exactly why they, and their short block suppliers, dont want synthetics in them.
Old     (ajholt7)      Join Date: Apr 2009       07-21-2010, 10:30 PM Reply   
Quote:
Originally Posted by wake_upppp View Post
Dont kid youself, a company like PCM that has been building engines for many years knows exactly why they, and their short block suppliers, dont want synthetics in them.
And why is that?
Old     (wake_upppp)      Join Date: Nov 2003       07-21-2010, 10:43 PM Reply   
Well I dont want to speculate on thier behalf. I'm just saying an established, reputable engine building company like PCM, I'm sure has done thier homework.
Old     (ilikebeaverandboats)      Join Date: Jul 2007       07-22-2010, 12:50 AM Reply   
Quote:
Originally Posted by wake_upppp View Post
Well I dont want to speculate on thier behalf. I'm just saying an established, reputable engine building company like PCM, I'm sure has done thier homework.
In no way bashing on PCM, but I might disagree here. Id like to see a legitamate reason as to why PCM would go against sythetic oil, its basically a car engine, most auto manufacturers suggest using regular oil im pretty sure, ill look at my ford manual, but im sure it says to use motorcraft stuff which is not synthetic. We still use sythetic in car engines.

I may be wrong, but im pretty sure im right haha
Old     (cwkoch)      Join Date: Aug 2006       07-26-2010, 12:26 PM Reply   
Quote:
Originally Posted by wake_upppp View Post
Well I dont want to speculate on thier behalf. I'm just saying an established, reputable engine building company like PCM, I'm sure has done thier homework.
Yeah- They've done their homework. If you are running synthetics, your engine is going to last longer!!! They would rather have your engine wear out so they can sell you parts, or a new engine when it's toast..... Come on... Why do you think the manufacturers don't want you to run synthetics?? If they sold you a product that lasted forever, they wouldn't have a chance to sell you anything ever again!!

Sorry, but the cost difference is about $30-$40 per oil change, a couple times a year??? Seams pretty minimal compared to the boat, gas, gear, etc.....

When something seems not quite right (like a manufacturer recommending an inferior product), just follow the money....
Old     (ilikebeaverandboats)      Join Date: Jul 2007       07-26-2010, 12:48 PM Reply   
Quote:
Originally Posted by cwkoch View Post
Yeah- They've done their homework. If you are running synthetics, your engine is going to last longer!!! They would rather have your engine wear out so they can sell you parts, or a new engine when it's toast..... Come on... Why do you think the manufacturers don't want you to run synthetics?? If they sold you a product that lasted forever, they wouldn't have a chance to sell you anything ever again!!

Sorry, but the cost difference is about $30-$40 per oil change, a couple times a year??? Seams pretty minimal compared to the boat, gas, gear, etc.....

When something seems not quite right (like a manufacturer recommending an inferior product), just follow the money....
idk if thats there ultimate goal, cause how often do you hear about major work being done to a motor in a boat, re-boaring or sleeving cylinders? Most of what goes wrong on our motors are simple little fixes.

I really think they dont recommend it because they havent put in the time in R&D. They know dino oil will work fine, so why spend the extra time/money to test synthetics? They dont explicitly say not to use synthetics do they?
Ford doesnt recommend you use motorcraft oil (which isnt synthetic) so that the motor wears down and they can sell you parts sooner....


I use full synthetic in my boat. its an automotive engine adapted for marine use, which means its tuned differently and has different exhaust/intake, those things arent going to change oil performance. How could its lubricity be changed by any of those factors? And it may be overkill, but would you rather have overkill or underkill?

Last edited by ilikebeaverandboats; 07-26-2010 at 12:51 PM.
Old     (05mobiuslsv)      Join Date: Apr 2006       07-26-2010, 12:49 PM Reply   
Quote:
Originally Posted by cwkoch View Post
Yeah- They've done their homework. If you are running synthetics, your engine is going to last longer!!! They would rather have your engine wear out so they can sell you parts, or a new engine when it's toast..... Come on... Why do you think the manufacturers don't want you to run synthetics?? If they sold you a product that lasted forever, they wouldn't have a chance to sell you anything ever again!!

Sorry, but the cost difference is about $30-$40 per oil change, a couple times a year??? Seams pretty minimal compared to the boat, gas, gear, etc.....

When something seems not quite right (like a manufacturer recommending an inferior product), just follow the money....

Ok, boy those marketing teams sure did a good job.
Old     (cwkoch)      Join Date: Aug 2006       07-26-2010, 1:13 PM Reply   
Quote:
Originally Posted by 05mobiuslsv View Post
Ok, boy those marketing teams sure did a good job.
No. I don't really remember seeing that in any commercials or anything like that..... I use Amsoil is everything I own, and I don't know if I've ever seen an Amsoil commercial.....

My info comes from a friend of a friend (yeah, a bit disconnected, I know). He's a lubrication engineer. He does the actual ball bearing wear tests, and tries to formulate better products and additives. He said that the full synthetic oils are much, much better than conventional- but that the conventional is "good enough". So, take that as you will..... Conventional is good enough, but synthetic is better. If the oil is more slippery, your engine is going to last longer..... bearings will last longer, and rings will seal longer.... Granted, there are other factors that may lead to a premature failure- but if the parts that wear out have better lubrication, they're going to wear longer....

For the small price difference, I'll take the better protection.
Old     (ilikebeaverandboats)      Join Date: Jul 2007       07-26-2010, 1:19 PM Reply   
Quote:
Originally Posted by cwkoch View Post
No. I don't really remember seeing that in any commercials or anything like that..... I use Amsoil is everything I own, and I don't know if I've ever seen an Amsoil commercial.....

My info comes from a friend of a friend (yeah, a bit disconnected, I know). He's a lubrication engineer. He does the actual ball bearing wear tests, and tries to formulate better products and additives. He said that the full synthetic oils are much, much better than conventional- but that the conventional is "good enough". So, take that as you will..... Conventional is good enough, but synthetic is better. If the oil is more slippery, your engine is going to last longer..... bearings will last longer, and rings will seal longer.... Granted, there are other factors that may lead to a premature failure- but if the parts that wear out have better lubrication, they're going to wear longer....

For the small price difference, I'll take the better protection.
hahaha dude does that guy work for KY!? that would be awesome. Im not bagging on him, but thats freakin hilarious if he did. did he major in chemical engineering and his job title is lubrication engineer?
Old     (ajholt7)      Join Date: Apr 2009       07-23-2010, 4:23 AM Reply   
http://www.amsoil.com/storefront/wcf.aspx
Old     (alans)      Join Date: Aug 2005       07-23-2010, 4:51 AM Reply   
Where did you guys see that PCM does not want Synthetics in their engines? That is wrong

Here is the exact text from the 2010 Operation Manual.

Synthetic engine oils may be used in PCM Marine
Engines. Synthetic oils must meet the Engine Oil
Requirements for Classification and Viscosity listed
below. The use of synthetic oil does not permit the
extension of oil change intervals. operation or 120 days, whichever occurs first
Old     (alans)      Join Date: Aug 2005       07-23-2010, 4:54 AM Reply   
And here is the exact text from the 2003 Operation Manual.

Synthetic engine oils are not recommended for use
in PCM Engines. Synthetics may offer advantages
in cold temperature pumpability and high temperature
oxidation-resistance. However, synthetic oils have not
proven to provide operational or economic benefits
over conventional petroleum-based oils in PCM Engines.
Their use does not permit the extension of oil change
intervals.
or 120 days, whichever occurs fi rst
sion Classifi cation and
Old     (wake77)      Join Date: Jan 2009       07-23-2010, 7:38 AM Reply   
Well, is the verdict using synthetics is only going to hurt your wallet and not your boat (unless the boat is a much older model)?

I think this argument is ridiculous, because I am almost willing to bet that if pro-synthetic (myself included, in the boat anyway) users posted the particular brand they used, there would ensue an argument about which synthetic is the best. There would be a similar argument about particular conventional oil brands.
Old     (joesell)      Join Date: Apr 2001       07-23-2010, 8:07 AM Reply   
I think it's funny. Even the people who are against synthetic's because of the cost, say that synthetic's are better. It might be overkill, but I like overkill. And it's not even that expensive. Walmart has 15w-50 Mobil 1 in 5 quart cans for $21.
Old     (jpuckett)      Join Date: Apr 2005       07-23-2010, 8:21 PM Reply   
+1 Here for synthetic oil. I use Royal Purple in everything that I have.

www.royalpurple.com
Old     (ilikebeaverandboats)      Join Date: Jul 2007       07-23-2010, 10:38 PM Reply   
Quote:
Originally Posted by jpuckett View Post
+1 Here for synthetic oil. I use Royal Purple in everything that I have.

www.royalpurple.com
Royal purple is good stuff, everything in my truck is royal purple full synthetic. T case, tranny, diffs, powersteering.
Old     (hatepain)      Join Date: Aug 2006       07-26-2010, 12:53 PM Reply   
Quote:
Ford doesnt recommend you use motorcraft oil (which isnt synthetic) so that the motor wears down and they can sell you parts sooner....
I have Motorcraft full synthetic in my boat right now. We also sell a blend.
Old     (ilikebeaverandboats)      Join Date: Jul 2007       07-26-2010, 1:07 PM Reply   
Quote:
Originally Posted by hatepain View Post
I have Motorcraft full synthetic in my boat right now. We also sell a blend.
damn well that kinda voids my argument haha. Motorcraft i see at autozone is always dino so i just figured it was all they sold.

right now using a castrol sythetic blend.
Old     (05mobiuslsv)      Join Date: Apr 2006       07-26-2010, 1:18 PM Reply   
If you're using Amsoil you must be getting a killer deal if it' s only costing you and extra $30 per oil change.

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