Best oil for 3 speed rat

[reddog1898]

Anybody that is still using a 3 speed what type of fluid are you putting into it? Are you also using the same fluid in your transfer case?

 

[1strodeo]

I put 80/90 gear oil in my trans and rear end the other day and they work fine. My t-case calls for 50 weight oil, I'm guessing it's not around any more but the local parts house sells t-case oil I noticed

 

[BOBS 2 68S]

I run 80/90 in all the drive train. Years ago I ran 50 weight in the t-case and it burned it up. An old off road racer that helped me learn Broncos said that 50w was to light and to run 80/90. Just my .02c

 

[1strodeo]

I run 80/90 in all the drive train. Years ago I ran 50 weight in the t-case and it burned it up. An old off road racer that helped me learn Broncos said that 50w was to light and to run 80/90. Just my .02c

Maybe that's why they don't sell it no more!

 

[bronconut73]

Maybe that's why they don't sell it no more!

75-80 weight "gear oil" is approx. the same weight/viscosity as 50 weight "motor oil".

I learned that here.

 

[Pa PITT]

... I too have ran 75/90.in BOTH . BUT when I had Mystic in mine my Transfer case IT MAKE LESS NOISE.. I had a clutch put in ..one day before a hunting trip. I had to pay the guys at work to do it. But they jumped in on it. & really tried to do me a good job. . But they changed all my fluids . & Gave my Bronco a good once over. 2 Dodge Technicians jumped on it. But they put BG 75-90 in it ..It's never been as quite .. AS that Mystic was..