Anyone use MT-85?
02-03-2014, 05:24 AM
#1
Anyone use MT-85?
Our trucks call for a 90wt gear oil (80W-90 or 75W-90) in the manual transmission. Redline makes 3 flavors of manual transmission lube:
MT-90 (75W90 grade, 16 cSt viscosity)
MT-85 (75W85 grade, 12.5 cSt)
MTL (75W80 grade, 10.5 cSt)
MT-90 seems like the obvious choice since it is actually a 90wt oil. But has anyone tried the slightly thinner MT-85 stuff?
No disucssion about GL-4 vs. GL-5, please. We've beaten that sulfur horse to death already in other threads.
MT-90 (75W90 grade, 16 cSt viscosity)
MT-85 (75W85 grade, 12.5 cSt)
MTL (75W80 grade, 10.5 cSt)
MT-90 seems like the obvious choice since it is actually a 90wt oil. But has anyone tried the slightly thinner MT-85 stuff?
No disucssion about GL-4 vs. GL-5, please. We've beaten that sulfur horse to death already in other threads.
02-03-2014, 06:41 AM
#2
Registered User
I doubt there is much difference. However, I use MT-90 and live in a colder climate than you and never had a problem. Since your in ATL, I would use the heavier stuff...MT-90.
02-03-2014, 06:47 AM
#3
Good input, thanks.
I accidentally ran a Valvoline MTF product once since it was supposedly rated for 75W90 applications. Once I finally dug up a product data sheet it turned out to be a 5W30 like MTL, so I dumped it. But it had operated totally fine until then.
I accidentally ran a Valvoline MTF product once since it was supposedly rated for 75W90 applications. Once I finally dug up a product data sheet it turned out to be a 5W30 like MTL, so I dumped it. But it had operated totally fine until then.
