I spoke to a man at TA Performance. I told him my mians were .0018-.002 and wondered did I need a HV pump and could I run 20w-50(it's in there now). He said I could run a HV and not to be too concerned about the clearence being on the high side. He also said to run the 40lb spring. He assured me this would not affect idle oil PSI. swapped the spring and no difference at the guage.His reasoning was the stiff spring makes the pump work hard and create a lot of back pressure. The 40lb spring would take care of that and my cam bearings and sensor drive would be okay. So since I get about the same oil PSI as MPH in 3rd and 4th gear I will be mostly running with the bypass open???Does this make sence??To me it doesn't. Let get some opinions. eek!