I've searched like crazy and need to verify this: My '92 745 has the 1041 rear. I've read that this is not a LSD that needs friction modifiers but rather a lockup type with no clutch. And that I am to use standard 75w90 gear oil. Can anyone please verify this for me? Thanks, C.

p.s. I am so happy that Grandma's wagon that we inherited has the posi rear. This car rocks in the snow and I want to keep it that way!

 

check out:
https://customers.volvocars.com/owne...92740_9_1.html

 

Thanks for the link bubba but I still have a question. Can I assume that since there is no reference to whether the differential is open or traction lock, then they both use the same lube? Thanks, C.

 

If it has NO CLUTCH (not LSD) then it needs NO LSD oil.

 

Yes but I don't know where I read that. I'm looking for confirmation that the 1041 has no clutch.

I searched more today and it seems that the 1041 rear is by Eaton and that it uses a standard GL-5 gear oil (MIL-L-2105 B or C that has been replaced with D that has been replaced with MIL-PRF-2105E which seems to trump all previous oils). Until someone tells me different, I'm going with a good 80w90 (recommended weight by Volvo) API GL-5 dino or synthetic. The Lucas 80w90 sounds like it's pretty robust with lots of additives to reduce the clunk I'm hearing now.

If anyone has more info, I would like to hear it. Thanks, C.