Well im just throwin this out there guys, I went to o reillys today here in high point and theres this guy named Johnnie that works there. Hes an old gear head and has worked in tranny shops and still does work on his own drag car in his race crew. But he has confirmed that ALL his drag cars have shown improvement with royal purple as well as amsoil.
He used Red Line Synthetic in their Transmissions, and also Red line in their rear ends, and royal purple as well as amsoil in their engines. Long story short, He has confirmed that Amsoil and Royal purple as well as Red Line can and will reduce friction thus giving you A small horsepower increase. WHEN KEPT MAINTAINED. Had to throw that on there.
But I change my oil every 1500-2000 miles just because I like changing oil lol and also bcuz i love my car and want it to run forever.
95 Trans am A4 transmission, PaceSetter Long Tubes, AIR & EGR deleted, Flow Master 40 series, CAT removed, TB bypass, 160 deg thermo, Slp trick flow dual CAI , Royal purple rear end fluid, Royal purple Engine oil, Removed spare tire+Jack, rear seats, rear seat belts and buckle rolls, removed head liner and scraped sound deadening, removed carpet, and underhood liner, removed AC . 295/50r/15z rear tires.