which crate engine ? these new gen VI engines don't carry much OP have 3 only about 50-60 cold down to 25-30 after running at idle, like others said ck those filter lines, also what filter set up are you running ? what line adapter ? correct restricters in block under filter mount ? try a good filter and 20w50 oil...

Winner on the first guess.. I have been fighting the same issue for 3 years, :angry-smiley-038:I spun mains and it is the same senario, finnally scrapped the block, started freah, dropped it in this weekend, all is good !:drink:

If these are new Marine crate engines and Gen 6, you have to remove the center pressure relief valve and change the other one to a 30 LBS. Do a search, there has been endless post's on it.
I installed two this spring, and they sing long a song:drink:

Here:
http://www.offshoreonly.com/forums/g...-vi-502-a.html

Good one Jim. Forgot to mention that. I am sure you nailed it. I like many others pull them both and plug the outer.

Yes Gen VI
I hope it didn't due any damage.. Engine is 2 weeks out of warrenty

I think Im very lucky----mechanical gauge reads 60 and held for 10 min while on the muffs,going to put back on the water this weekend.. what color is the wire and location of gauge sending unit // what is the wire and location of low oil warning....