Is 75w-90 fine in a getrag 260?

[Schwarz325]

My trans didn't have a label on it, so found online that it's either atf or gear oil, so i drained my fluid and it was nothing like ATF, so i tossed some mobil 1 synthetic gear oil, 75w-90? I talked to a guy at at shop here he said anything but somekinda bmw fluid is gonna blow every bearing out?

what say you?

[drumad]

Someone confirm this. If the synchros are made out of brass you want to avoid using any API GL-5 gear oil. The more "advanced" formula of GL-5 vs GL-4 will destroy the brass synchros.

I ran into this problem with my Nissan when I accidentally filled it with the same Mobil 1 75w-90 (GL-5). I didnt run it bc I looked into it more and realized I needed GL-4.

GL-4 75w-90 gear oil is sorta hard to come by but all you need to Redline MT-90 which is exactly that. Because of the MT-90, its like shifting through butter.

Then again, the 260 might be a bit more "advanced" than my nissan tranny.

edit:

http://www.r3vlimited.com/board/showpost.php?p=1404424&postcount=5

http://www.e30tech.com/forum/archive/index.php/t-94001.html

GL-4 is a must. Redline MT-90 is the way to go it seems. The Mobil 1 will destroy the tranny components.

[Schwarz325]

THanks alot buddy, i appreciate it! Looks like i'm gonna be draining it out.

[long tall eta]

what about lubro-moly 75/90 synthetic?

[jlevie]

A Getrag 260 wants ATF or Redline MTL.

[george graves]

What about an e30 m3 Getrag 265?

[Gesucht]

http://www.swepcousa.com/lubesite/lubepdf/TG_199508.pdf

[MR 325]

Whoa guys, run of the mill 75w90 is FINE in a 260 transmission, unless it has an ATF label.

Don't waste money on $30 in fluid. Don't want to listen to me? Fine.

[Schwarz325]

so what i put in that thing is fine?


if redline MTL is 75-90, which is what it says on the bottle? why the hell can i not use the mobil 1? pretty much the same shit

[Schwarz325]

and i believe it says gl4 and 5

edit: i'd have to check the bottle in the garage