Offshoreonly.com - Help...oil temp and pressure issues

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- - Help...oil temp and pressure issues (https://www.offshoreonly.com/forums/general-boating-discussion/193621-help-oil-temp-pressure-issues.html)

Wobble

08-22-2008 10:49 AM

Quote:

Originally Posted by PatriYacht (Post 2659767)

280 is too hot and if you are running a conventional oil you are risking engine failure. Even with synthetic you are shortening your engine life. No question the high temps are causing your low oil pressure. You likely need larger oil coolers but first I would check to see if you aren't running lean carburation. Also here is a good thread on oil pressure and plumbing. http://www.offshoreonly.com/forums/s...3&page=1&pp=20

280* pan temp is probably 230-250 temp after the cooler(depending on size cooler) where many measure their temp.

07DominatorSS

08-25-2008 06:31 PM

Quote:

Originally Posted by 302Sport (Post 2659624)

Yeah 20PSI is when the engines are at 250-280, and I am running Joe Gibbs 10W 30 hot rod oil in them cause they are flat tappet with solid lifters.....

That sounds like part of your problem. That oil sounds too light to me. What kinda motors are they again? I think I would recommend a 20w-50 or 15w-50. I would recommend the AMSOIL Dominator 15w-50.

blue thunder

08-25-2008 06:40 PM

I agree with everything said, but particularly PatriYachts comment on checking jetting in the carbs. Amazing the impact lean calibration has on oil temps. For me with flat tappet cams I run Rotella T 15-40 and have had good luck for 4 seasons. It's a lot less expensive than sythetic as well.

As far as 20psi hot after a hard run and idling in gear, no problem. As long as you are 50-60psi WOT.

BT :cool:

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