JHZR2
Staff member
Hello,
Ive been trying to decode the truth of using fluids other than ATF in MTs specced for ATF.
The unit in question is the 5-speed MT in my BMW, specced for ATF. IIRC it is a getrag 240.
The question is really, what are the compatabilities between ATF and synchromesh fluids, and what issues might arise from using a synchromesh fluid in place of ATF?
My understanding from reading back in the archives to 2003 (essentially all of Molakule's posts) is that ATF is mainly specced for cold weather feel properties, not for AW protection. OK, fine, got that...
But that said, are there any potential issues from using synchromesh fluid in place of ATF? Lots of folks run redline MTL, so I know the higher viscosity of such a fluid (say 10 vs. 7.5 for an ATF) is OK in terms of shift feel and performance.
Im concerned about long-term reliability using say, Amsoil MTF vs. ATF.
Thanks for your input!
Ive been trying to decode the truth of using fluids other than ATF in MTs specced for ATF.
The unit in question is the 5-speed MT in my BMW, specced for ATF. IIRC it is a getrag 240.
The question is really, what are the compatabilities between ATF and synchromesh fluids, and what issues might arise from using a synchromesh fluid in place of ATF?
My understanding from reading back in the archives to 2003 (essentially all of Molakule's posts) is that ATF is mainly specced for cold weather feel properties, not for AW protection. OK, fine, got that...
But that said, are there any potential issues from using synchromesh fluid in place of ATF? Lots of folks run redline MTL, so I know the higher viscosity of such a fluid (say 10 vs. 7.5 for an ATF) is OK in terms of shift feel and performance.
Im concerned about long-term reliability using say, Amsoil MTF vs. ATF.
Thanks for your input!