Ok...I recently replaced my oil pressure sender unit. I thought that would solve my low oil pressure problem, but it still didn't change much. The gauge shows over 40 when I drive while the engine is cold. I bought a pressure tester kit and checked it while it is warm (after 10-15 mins. of running). The gauge in the car(which I do realize is not very accurate to begin with) reads a little over 0 at about 10-45 mph. At about 60 it's at or a little under the first tick mark. Can this be the gauge or the wire going to the gauge? I am sure the sender unit is probably fine. I am really not an electrical guy so is it worth to re-wire somehow if that's what people think the problem is? Thanks guys!