[JJ'S90GT]

i need to change the tranny oil in my 98 cobra. i bought 2 bottles of royal purple oil for standard transmission. someone told me though that i have to use mercon or something like that? any other oil can damage my trannmission? can someone help me? and how many quarts do i need? thanks for the help

[98SVTSnake]

I put redline in my trans I don't remember the type I think it was automatic trans fluid It takes 6.6 pints with is a little less than 4 quarts. hope that helps you

[limp1969]

do not use royal purple
use gm syncro mesh hands down the best stuff
If you cal tremec that is the same they will tell you 3.3 quarts

[Brutal Metal]

I agree not a fan of RP, go Amsoil,Syncromesh,or just a quality conventional Mercon like Castrol or Valvoline!