Not exactly what I call proof, but here is my testimonial to synthetic. My son drove a late model small block Chevy with a 430 HP Jasper racing crate motor. When we changed over to Royal Purple we saw the oil temps drop a good 30 degrees. While several others puked, we never had a problem in 2 seasons (we did change it every 2 nights). He also won a bunch of races. Did it make more power? Maybe: I'd like to think it was his crewchief
. All my vehicles now get Mobil 1.
BTW, Mobil dropped the MT4 name and now call it T4 Racing just like on the Triumph jug. The Mobil web site said it was and is the same stuff, now it has the same name all over the world.
When I go to change the oil in the spring, I have trouble finding the bike oil. Nobody wants to stock it all year long. I am going to stock up in the fall from now on.
Mike Sr.
