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Engine Mechanical / Electrical / Re: Low Oil Pressure?
« on: August 02, 2017, 09:17:57 PM »There are a couple of pieces of information missing.
How large of a pan and what oil temp?
Idle oi pressure don't really mean a whole lot. As long as you have 15 PSI or above, I don't sweat it.... That being said, fresh engine? take out form a truck at the bent bumper yard? There are some internal bypasses for an external oil cooler that need to be checked out, but I would ditch that oil, run a good filter and run a higher weight diesel oil, like a 15-40 Rotella or similar, it's dirt cheap and will work fine for your application.
I like straight weight oils for two reasons.... 1, you will not be running your boat in the dead of winter at freezing temperatures unless you live in Canada...., 2, there are a large amount of polymers put into oil to play around with the multi vis oils, this takes away (ever so slightly) the desirable lubrication properties of good oil.... A straight viscosity oil has non of these polymers... But again, really difficult to find off the shelf.
It sounds to me like either the engine is a little tired, or the oil is getting silly hot, both of which are reasons to go to a higher viscosity oil..
Just my opinion without the advantage of taste, touch and smell....
GT
Hey GT
Thanks so much.. Im going to install a oil temp gauge and also i am running a 11 quart pan.. either way i appreciate the input. Im going to put in the oil you recommended and get a great filter.. The engine was pulled out the 3500 with 20,000 miles on it.. the reason the truck was scrapped was due to a fire in the cab of the truck..
