i repaired the rear diff. and brakes about 4 yrs ago... oilfield tuff on backhose. called case..or asco...those .... ill stop had to call okc asco to get the right answers.last time i put case rear end oil...guess it worked. dont know if 90wt would be ok???
There was a mandatory upgrade on the L series and all diff oil and planetary oils were changed from gear oil to hyd. oil.
woow kind of light???? scarry....thanks for the info.
Yeah that’s what we all thought too but it works. Especially for the brakes in the rear axle. Except for front hubs and we put gear oil in them.