Originally Posted by obfdcherokee
25lbs at idle is not bad it only requires 7 psi to avoid engine damage. Your pressure should go up and down with engine rpm. Keep in mind cold oil is harder to move than hot oil so your pressure will be higher at first start up.
I will second this. Stock oil pumps aren't the greatest but they will work for what its lubricating. 13psi is the factory limit on the low side, 73psi is the high side I think.
Keep it between those 2 and you will do fine. :-)
Its only when you get the upgraded Melling pumps that you get better oil pressure. (Mine is 40psi idle, 64psi hwy when hot) or (65psi idle, 85-90psi @ hwy when cold, 50-60F or lower)