Best c4 transmission oil

[MEDIEVAL FAB]

What is the best type of oil to use on a racing c4 transmission for a class 7 open?
Thanks

 

[Half-Ass Astronaut]

i read through almost every C4 thread on here and it seems like alot of people are going with Amsoil or Swepco.

someone also mentioned Castrol Dexron V.

i just want to know what the deal is with the Type F? and how to rid it from my trans...

 

[diirk]

I've always been a huge fam of Amsoil, so that's where my recomendation is.
As for how to purge your trans of fluid, the best way is to bring it somewhere where they have a transmission pump to exchange all the fluid.