type of fluid for a fm145


extricator1

15+ Year Member

Joined
Jan 11, 2008
Messages
11
Points
3,101
City
midland michigan
Vehicle Year
89 ranger reg.c
Transmission
Manual
why type of tranny fluid do you use in the tranny it`s a mitsubishi fm145 i believe ,i`ve heard different things,i was told dextron w/mercron3 and someone else said 80w gear lube i`m putting a new tranny in and dont want to use the wrong stuff, also how about the transfer case? any help would be appreciated!

thanx
 
Gear oil for the tranny, ATF for the t-case.
 
Actually, the factory specifies 75W-80, but just about anything close will work fine. There aren't any tight tolerances in a transmission, unlike a crankcase.

Use a GL-4, NOT GL-5 (hypoid), gear oil. Transmissions are not the same as differentials, due to the synchronizers.
 

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