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Discussion Starter · #1 ·
It seems most popular weight is 75w-140, is anyone using the Swepco 80w-140?

Also, how much of this juice do I need to fill the rear diff? :3: 2 quarts?
 

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Hi, rear diff take 1.6ltrs.

I use RP - so do lots of others. I dont think anyone has had any problems with the stuff. Seems to be quite popular.

Neil
 

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I use RP. Never heard of Swepco, so can't comment on the brand.

As an observation, the 80W is most likely thicker than the 75W, which means you'll have less lubrication while the car is cold. I wouldn't think it would be significantly less, but who knows?

just under 2 quarts. Remember - open the fill plug then the drain plug...

d-
 

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I too recommend using Royal Purple "Max-Gear" for the rear differential.
Here is what their website claims:
Max-Gear outperforms other gear oils because it combines the highest quality synthetic oils with Royal Purple’s proprietary Synslide additive technology. ...

PS; it comes with the limited slip additive needed for your LSD rear end.

Also recommended is their "Synchromax" for our manual transmissions.


Al. Wise
 

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I am using RP in my transmission and love it. I am going to put RP gear oil in my diff, but I haven't do so yet. Since we are on the topic, I am using Mobile 1 in the engine with no plans to switch.
 
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