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Help finding a gl4 gear oil for fm146


87RangerXLTct

Member
Joined
Aug 20, 2009
Messages
99
Reaction score
5
Points
8
Vehicle Year
1987
Make / Model
Ford
Transmission
Manual
Having a hard time finding a gl4 spec in 80w, napa sells a 85w-90 gl4 but might be a little thick? I can also find valvoline 80w-90 but it's gl4,gl5 spec and says limited slip on the bottle? What are you folks running in fm145,fm146 manual transmissions?
 


Spott

Spott

Member
TRS Banner 2012-2015
Joined
Nov 28, 2010
Messages
925
Reaction score
21
Points
18
Location
SE Idaho
Vehicle Year
2000
Make / Model
Ford
Engine Type
4.0 V6
Transmission
Automatic
2WD / 4WD
4WD
I rebuilt my FM146 with generic house-brand 80W-90 gear oil, and didn't have any problems for over 3 years until some lady cut across traffic and wrecked my '88.

Speaking of which, I probably oughta update my profile picture one of these days.
 
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