Fram is a lower end company when it comes to Oil Filters, however, it depends alot on the vehicle. As a parts guy who sells fram filters, I always used them on my grand prix. When I wrecked a rod bearing and swapped the engine, I was curious to see what was at fault. I hooked up a gauge and threw a fram filter on the new engine. I would get about 55 PSI under normal driving conditions. Then I threw a Wix on, and I was anywhere from 60-70PSI under normal driving conditions. I did some more research and found that on all 3.1, 3.4, and 3.8L GM Engines that a Fram filter can reduce oil pressure by up to 15 PSI!!!! I blame the Fram filter, and the stupid choice of stressing the engine with cheap quaker state oil was the culprit for my destroyed rod bearing. Hope this helps!