Thread: D2 Diff and Trans Box Gear Oil alternatives

I posted the same a couple of months ago . Some responses recommended50/50 mix of 80/90 and 85/140. 85/140 makes the transfer very hard to change when cold so I mixed and now better but still hard. Ok when warm. Rear diff has 85/140 no problems and clean oil after 17 Kk towing.

Originally Posted by PhilipA

I posted the same a couple of months ago . Some responses recommended50/50 mix of 80/90 and 85/140. 85/140 makes the transfer very hard to change when cold so I mixed and now better but still hard. Ok when warm. Rear diff has 85/140 no problems and clean oil after 17 Kk towing.

thanks Phil- I'll check out your post and replies. Curiously the forum search didn't find your post and replies.

onebob

Had the same problem some time ago, i went for the recommended 75W90 oil in the diffs but added this one FriktionTek? Ceramic Manual Transmission, Gear and Differential Treatment: The Best Oil Additive

it might be a placebo for my brain but it seems to me that it really has effect, bought it from amazon at that time and IMO worths every penny of it but there are many such kind of treatments/additives on the market and worth a try rather than go for thicker oil

Haaa! I used Moly in my Borg Warner . When I opened up the output shaft housing to inspect the output shaft, there was the Moly, attached to the inside of the housing by centrifugal force. The shaft was nearly completely stripped at 200 Kk.
Regards Philip A

I've had some not too good experience with Moly products too, they use a MoS2 based technology whics became obsolete IMO