Gear Oil 80-90w or 75-90w?

[454cid]

Thanks 454cid, I hadn't heard of it either but when I used Amsoil's search by vehicle and put in my Suburban's information it came back with several choices in three weights, some labeled W/Dana and some labeled W/O Dana. Thanks for the quick reply, I won't use it.

Ok, I get it now.... you mean the listing is labeled with, without or except, just like a listing might be for AC, or some other option. I probably should have realized that. Still I can't think of anything that would be different for a Dana, unless it's just the oil weight.