Quick gear oil question (sr transmission)

[SxMachine]

I just bought Redline MTL 70w80 gl-4 and I kno i shouldve bought the recommended 75w90 mt90 gl-4. I'm curious if there is a big dif between the 2. I just happen to work near a place that carries the MTL but needed it asap as opposed to ordering the 75w90 from redline. Any1 using the MTL in their sr tran with issues?

[mattblancarte]

Viscosity is a bit low, both at cold and hot temps. Can you return it and just get the right stuff? If so, do that.

If not, a wag of the finger, and be more prepared next time.

[SxMachine]

Yea prob best that i return the stuff, got a bit desperate and bought wut I could. Guess I'll jus have 2 bear the wait and get the proper oil.