Any reason that I cannot use 85w-140 HD oil in my differential I believe Dana called for 90-wt.

http://www-static.shell.com/static/g...oil_85w140.pdf

The rep from Shell says it should be fine.

Here in Southern California it doesn't get cold.

Jim

 

It might reduce your mileage a tad, but page 0-26 of the '92 FSM recommends 85W-140 (among others) for temps from -10F on up. I run synthetic 75W-140, FWIW.

 

ran 85-90-140 kendall for years.they don't make it anymore! i'm on my last 5 gallon bucket.worked great and still does.
i use shell 600w in real old traansmissions and like their product.

 

I got 4 quarts of the Shell because it is severe duty, they said it is allot better than products like Sta Lube.

Anyone know if there is a magnet inside the diff?
Jim

 

I don't see why it would hurt anything either. I run 80-90wt

 

How much oil does the rear end hold (Quarts)? I have a 93 D250 I bought recently and want to do a oil change on the rearend.

 

From the Sticky.

7.0 pints



Jim

 

Thanks for the info!

 

I tried Synthetic 75W140 and had oil analysis run after 18,000 miles. What I found was that unless you do a lot of towing it retains a lot of water. Under normal driving 75W140 does not get hot enough to keep this grade of gear oil from building excessive amounts oil water and other soluable contaminants from building up. I have switched back to 75W90 and analysis show that the build up of water is not a problem with 75W90.

Bob

 

you can stick a small magnet on the plug, if your not removing the cover

 

FWIW Amsoil recommends 75-140 severe gear for dana 60
75-110 severe gear for dana 70

 

No magnet on the plug or inside the cover. The 7 pints (3.5qts) isn't enough to make the fluid come in contact with the plug anyhow. Might just stick a magnet near the bottom of the pan.

 

When driving the oil is sloshing/misting around so a magnetic fill plug will still capture particles. I would add both magnets myself.

 

I changed my differential oil on Wednesday. Bought 4 quarts of 85W-140 because the specs called for 7 pints (3.5 quarts). It filled up all the way with only 3 quarts though, so I ended up returning the last one.

 

Were you on a level surface when you changed it? I've always been able to get the 3.5qts in there.