synthetic trans fluid
Has anyone ever switched their trans fluid over the pure synthetic like (royal purple) why would you do this or why not? thank you
Forum Discussion
I said Amsoil nor Royal Purple are on the ALLISON approved list. Allison is no longer part of GM. They are also not TES-295 but TES-389. That being said, Amsoil and Royal Purple, IMO, should do very well as a synthetic in any transmission.
