Originally Posted By: WellOiled
I found this thread which covers many possibilities.
GM 5.3L low oil pressure issues.
I’m not sure what the rankings should be.
That's a long thread. Looks like I should use the larger filter and change when the pressure goes down. I have never heard ticking in the lifters so I am pretty sure I don't have a pickup or oil pump problem.
I had changed at 30% which was between 5k-7k with cenex semi syn 5w30 for the first 80K. Then we switched to Cenex Maxtron Dexos 5w30 and changed at 0% which was 7-10k. The last three changes have been with Pronto syn 5w30 Dexos. The oil pressure has always got lower at the end of oil interval; I figured it was due to shearing and lower viscosity, but maybe there is some sludge building up in there??
I found this thread which covers many possibilities.
GM 5.3L low oil pressure issues.
I’m not sure what the rankings should be.
That's a long thread. Looks like I should use the larger filter and change when the pressure goes down. I have never heard ticking in the lifters so I am pretty sure I don't have a pickup or oil pump problem.
I had changed at 30% which was between 5k-7k with cenex semi syn 5w30 for the first 80K. Then we switched to Cenex Maxtron Dexos 5w30 and changed at 0% which was 7-10k. The last three changes have been with Pronto syn 5w30 Dexos. The oil pressure has always got lower at the end of oil interval; I figured it was due to shearing and lower viscosity, but maybe there is some sludge building up in there??