GL4, how about GL2 through GL5?

[Livolsi, Stephane]

Is anyone using Amsoil synthetic 80W90 GL2 through GL5 in their tranny?  If
so, how long have you had it in and any comments on shifting smoothness,
etc?

If GL5 can't be used, I don't see how this can meet GL4 and still be GL5
spec.

Local Amsoil rep sounds very knowledgeable and almost has me convinced to
use it, but I wouldn't mind some BTDT

For the record, no one around here carries Redline.

Thanks

Stephane