Originally posted by: blurredvision
Well, I'll admit to being one of the few votes whose car does not require premium, but uses it anyway. Before I start my story, let me say I know nothing about cars except for the basic stuff.
I've had my 95 Grand Prix SE going on 5 years now. About a year after I had it, I decided to start putting in premium. I continued to fill with premium for well over a year straight, and to me, the car drove a little smoother and was a bit quieter within a couple of months of starting filling with premium. Some of you will dispute me on this, but I don't care. Just over the past couple of months, I've started filling with premium again, as a gas station nearby offers premium for only 10 cents a gallon over the regular all the time. Once again, I feel as if my engine is a little smoother now.
It's always been my impression that premium gasoline was higher because of the higher filtration used to make a basically cleaner gas than regular can give you. Therefore, it's burns cleaner in your engine, which can only be a good thing.