synthetic in tranny

i was wondering due to the heavy load i put on my boat 1500-2200lbs ballast would it help the tranny to run synthetic. i know some guys are. is synth tranny fluid much better. money is know object just want the best for my boat

I don't think running synthetic trans fluid is going to be any advantage in WB boats.

In a truck pulling the boat to the lake, maybe, because it is much harder to give off heat through an oil to air trans cooler.

With a boat, however, you have a virtually unlimited supply of cool water (whats the warmest your lake ever got?) that is run through the trans cooler. Plus, there is no TC so none of the slippage that occurs with shifting gears and TC slippage which is what really heats things up. So when you change the trans fluid at 100 hours, its probably not because its broken down...its more because its dirty.

For the same reason, I would not run synthetic trans fluid longer than the reccommended interval for dino.

I do run synthetic in both my boat and truck engine. I can be swayed that heat is much more of a factor in that respect.

Agree that since we don't EXTEND service intervals just cuz we're using synthetics, there may or may not be benefit to using them. Many here have made good cases that heat is the real area where synthetics shiner, and heat is no real issue in a boat.

As for me any my Epic, Mobil 1 goes everyhwere. (And yes, I do understand that Amsoil makes a better engine oil - anal, but not REALLY anal ;-)