These products show compatibility for GM part #12346190:
AMSOIL Manual Transmission & Transaxle Gear Lube 75W-90
Max Gear Synthetic Gear Oil for Max Protection | Royal Purple http://www.royalpurpleconsumer.com/...le_Transmission_Lubricant_Cross_Reference.pdf
Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MT-85 75W85 GL-4 Gear Oil
I'm generally not a fan of overpriced OEM fluids.I am running the Amsoil in mine. Another guy that has several NV4500's and runs a lot more miles than I do, said he did not get the same shifting performance out of the Amsoil as he does the Castrol Syntorq LT
Do you have a link for that?I love my toyota. Now that the burb is back on the road, I can give it the TLC it desparately needs.
I ordered the right oil from Amazon, and put it in the trans. All new fluids in the truck now, should be good to go for quite awhile! I appreciate all the feedback!