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-   Archive through August 01, 2004 (http://www.wakeworld.com/forum/forumdisplay.php?f=184054)
-   -   Oil Pressure (syth & high visc) (http://www.wakeworld.com/forum/showthread.php?t=181399)

jmccallum 07-26-2004 5:59 PM

I switch from what ever junk the marina was using to Mobil 1 Synthetic 15W50 (as per engine manual) last fall. This spring (late up here) I noticed that the engine oil pressure was way up. Instead of 40 to 60 psi (depending on rpms etc) I'm between 60 to 80 psi. After a two week vacation it seems to be lower but definitely higher that last year. Overall the engine seems to be running fine (occasional run-on). <BR> <BR>I know the viscosity is higher but have never noticed changes like this in other motors when I changed the oil. <BR> <BR>Has this happened to anyone else? <BR> <BR>Any bad stories? Things to watch out for? <BR>

mikeski 07-26-2004 11:26 PM

It's perfectly normal. Were your before and after readings taken at the same engine temperature? Colder engine = higher pressure

tommyadrian5 07-27-2004 8:35 AM

from my experience the oil pressure guage is pretty innacurate, mine reads 40 at idle and 80 at speed. From what I understand, the cruising and high speed pressure is innacurate, more important is that you HAVE oil pressure, rather than exactly what it is.

jmccallum 07-27-2004 10:01 AM

I think you're right Tom. I've never seen a change that big. If you're ok at 80 psi I guess I am too. Actually, it only peaks at 80 psi <BR> <BR>Mike; I'm in Canada, engines never get hot...lol <BR>Seriously, the motor was fully up to temp when I noticed the pressures

trash 07-27-2004 6:42 PM

Don't engines (auto and marine) have oil overpressure valves so you don't blow a seal? <BR> <BR>I never worried about oil pressure as long as there was some. Mine always seems to sit at 40 when running and 30 when idling. <BR> <BR>Trash

jmccallum 07-29-2004 8:43 AM

There's no doubt that 0 psi is bad... <BR> <BR>Thansk for the help guys

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