The Ford Barn

Diavolo · 01-26-2016, 10:23 PM

Just listen to Hoop. That being said, here is what I use to judge if an oil is the right thickness. After the engine is warm, I see oil pressure at idle and at 3000 rpm. At idle, if it's at least 6 psi for ~600 rpm, it's good. If it's at least 30 psi at 3000 rpm, it's good. If it's pegged when HOT at either point, it's too thick or something is wrong. If it's not at least these numbers, go to a heavier grade until you get at least 10 psi/1000 rpm.

Got this from bobistheoilguy and that's how I do it for everything now.

01-26-2016, 10:23 PM	#28
Diavolo Member Join Date: Jan 2011 Posts: 67	Re: oil Just listen to Hoop. That being said, here is what I use to judge if an oil is the right thickness. After the engine is warm, I see oil pressure at idle and at 3000 rpm. At idle, if it's at least 6 psi for ~600 rpm, it's good. If it's at least 30 psi at 3000 rpm, it's good. If it's pegged when HOT at either point, it's too thick or something is wrong. If it's not at least these numbers, go to a heavier grade until you get at least 10 psi/1000 rpm. Got this from bobistheoilguy and that's how I do it for everything now.