That's true. I've just had good hear say from my father and his friend who races dragsters and he uses RP. Can't win them all, but it's like everything else. Sometimes it works perfect and other times it just goes horribly wrong. Obviously, your and his car hated the RP brand and liked the OEM or Mobil1 stuff. I would suggest Mobil1 also as I had it in my Bonneville and didn't change the oil for 1.5yrs (Yes, very bad, but I was junking the car anyways). Wanted to just ruin the car but the engine still ran strong and sold the car to my dads friend for 500$ and he did some stuff and got 3grand for the car rofl..