Did the first oil change and tranny fluid swap 2 weeks ago. I honestly don't feel a difference, not that I was expecting any.
Also I used up all 8qts on my non track pack GT and it was still half a qt down. So I'm thinking it needs 8.5 qts. This is after running the engine to get the oil circulated. Then checked the dipstick.
My brother did put oil in the filter first, filled it all the way and then installed the filter.
You wont "feel" anything. You got a quality product though! :beer: