Originally Posted By: Patman
Originally Posted By: davidyan
Cars almost always feel smoother immediately after an oil change.
When I've done oil changes but kept the same brand I never felt a difference ever. But as mentioned above, I definitely noticed a difference when I switched to GC and when I switched to GTX 5w20. So in my case I'm definitely not imagining it, and I believe the original poster in this thread too. When you drive a car long enough to do feel "in tune" with it and can notice the subtle differences that some oils might give it or even a different brand of gas.
Better,or worse?