I can't seem to find a straight 90 weight gear oil to change differential fluid. Is there a multi-visc. fluid that you guys like (those of you in the south that skip over references to <0 degrees F). I was looking for Mobil 1, but no luck. Also, does the bottle have to say "hypoid"?
Also... when I was trying to track down a grrrr noise, I changed the front diff fluid to M1 75w-90 syn gear lube (about 2K ago). Close enough? That's the correct wt. for the t-case, right.?
Also... when I was trying to track down a grrrr noise, I changed the front diff fluid to M1 75w-90 syn gear lube (about 2K ago). Close enough? That's the correct wt. for the t-case, right.?