[Cash Money]

i must agree... Royal Purple is awesome... just changed it in the Celi and runs soo much smoother, cooler, and quieter... more power? couldn't tell you... they claim like 2-3hp, but that's below what the butt dyno could tell... used to run amsoil and mobile 1... so far, the purple stuff owns for me...

 

[Cash Money]

i use Royal Purple in both, engine and tranny oil... i have nothing but high regards for them both... and i plan on to continue using it with my LSD when it's installed along with the car being boosted...