I just put in for the first time, Royal Purple. Has anybody else used it yet? I feel a slight difference in the pick up, but I was told that I'll feel it after the second change.

 

the first change it should mostly be still cycling through the old that is still in the system. you are getting the placebo effect right now...it feels different cause its something different. i bet if you took it to a dyno performance diff would be nill. The second change should get all the old junk outta there and your good to go.

 

I've never used R/P oil, but I can tell you that the gear oil is some good stuff. I used in the transmission of my Harley and it made a world of difference. I highly recommend their product. I did lots of research on it too.

 

I found that there is a difference in the gas mileage. I drove from Portland, OR, to Yakima, WA, which is about 180 miles on half a tank of gas. That's including a lot of rolling hills and a small pass. It feels like it's running a lot smoother too. Starting to like it a lot and I'm already recommending it to friends and family.