Has AC Delco gone down hill (kind of like GM)? I typically replace all parts with OEM parts. 3 weeks ago I decided to swap out the oil pressure sensor with a new AC Delco one. I did this because I had suspicions that the oil sending unit that was in the truck was leaking. Old one still worked from when I replaced it 5 years ago. Walked out today to start the truck and let it warm up from a cold evening and boom, we're at 80psi. The reason I ask this question is because there have been a few times in the past year or two where I have questioned some of the AC Delco stuff I've bought. And just like everything else I wonder if AC Delco has gone cheapy