I'm wanting to change the front and rear differential fluid in my 76 CJ5. What weights should I use? Can I put 85/140 or should I use something lighter?
I'm wanting to change the front and rear differential fluid in my 76 CJ5. What weights should I use? Can I put 85/140 or should I use something lighter?
GL5 rated oil in differentials and GL4 rated in transmissions/tcases. GL5 has additives for the hypoid gears which will slowly eat synchros. The exceptions are synthetic GL5s.
75-90 is a good weight for a CJ axle.
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