Oil change and other changes

[RedBarchetta]

Originally Posted by Gunner

Oil pressure...Idle pressure is actually higher, stable at 20 psi instead of dipping a little below 20 when hot

I can't believe no one else brought this up.

Gunner, how long has your motor been running a 20 psi (or less) oil pressure at IDLE? And what is your idle set at? As a general rule of thumb, you need 10psi for every 1,000 rpm, and at a 1,000 rpm idle a healthy motor should show around 40psi. You are half that, which concerns me that your bearings are showing wear.

I had this condition (lost oil pressure and suddenly had hot idle around 20-25). Pulled the pan and a couple main caps and I was showing some brass on the bearings. All crank journals looked good, so I swapped out the crankshaft bearings (with motor in the car) and also did the connecting rod bearings while I had it all apart. For insurance added a new oil pump (I think I sucked in some slag from my oil cooler and that scored the bearings). This fixed my problem and I now have excellent oil pressure.

-Dean