dackp143

iTrader: (3)

I have used RP on my IS350 for 6 years and my old IS300 for 5 years. Wouldn't change to anything else.

06isDriver

I watched that show TRUCKS! on spike tv, and they did a little promo for Royal Purple. They brought in a chevy suburban 4x4 and swapped out every fluid on the truck (diff, oil, etc) to the royal purple brand. The truck previously had synthetics fluids thoughout, though they didnt say what brand. They ended up making about 7whp/9ftlbs more at peak and 10whp throughout the power band.

It was an advertisement for royal purple, but back to back dyno runs are pretty convincing.