Deuce tranny oil?

[spentshell]

Can I run cam2 80/90 oil with a mt-1 rating in my tranny?

 

[DanMartin]

http://www.finalube.com/reference_material/API_Automotive_Gear_Lubricant_Service_Categories.htm

MT-1

This designation denotes lubricants intended for non-synchronized manual transmissions in heavy-duty services. Lubricants meeting MT-1 contain thermal stability and extreme pressure additives.

I'm assuming your oil is GL-5? MT-1 rated lubes are designated as yellow metal safe, so it should work fine, but will probably be overkill for a tranny. I plan on running GL-5/MT-1 in all the gearboxes in my deuce to keep things simple (Costco sells 5 gallon buckets of the stuff).

 

[DanMartin]

...that didn't come out right. What I meant to say is that going with a good GL-1 should be fine (that's what the military used). Going with a newer GL-4 or GL-5 (with MT-1 rating) will work but you are paying extra for a better lube that will not make a big difference in the transmission. Now, in the differentials, it will make a big difference especially if you use GL-5.

Of course, this is just my opinion based on my own research. I'm sure others out there have more to add...

 

[spentshell]

Thanks Dan im not to worried about the cost since I get it wholesale, as long as its safe for the tranny. Thanks Again

 

[OD_Coyote]

I used to run GL-1 in my tranny/xfer case and GL-5 in the the diffy's, but now I run GL-5 MT1 in the whole shootin match.