What should oil pressure be at idle and driving say at 3000 rpm?
I have been running 5-20 and thinking about switching to 5-30
What do some of you guys run?
I have 217,000 on mine and it runs fine.
this is what gm manual I found in my software says about oil pressure in these trucks. they use a different variable displacement oil pump. only ls to use it I believe, but the LT engines all use a version of it. at least from what I've looked up.
I think you'll need a scanner to read the psi, my dash gauge doesn't look very precise
oil pressure spec hot
36psi @1000
42psi
@2000
45psi @4000
afm relief valve 55-75 max.
p0521 ecm detecta different oil pressure than expected by lower 6.8psi or greater than 7.3 psi for 10sec
the ecm code is will set a light for to higher pressure then expected and to low of pressure. again I'm guessing it's before the lifter deactivation is such a big issue and completely controlled by oil pressure. because byond that it's just a simple ls engine that aren't picky at all about oil pressure. I've seen junk yard 5.3s handle huge nitrous hits over and over while having bearly any oil pressure at idle from worn out cam bearings.
