Front/Rear Axle Oil

[DIESELMAN]

What is everyone using in there front and rear difs?



I get really irritated with the local vendors when all I can find is 80W-120 Blended and not Synthetic 75W-90.

 

[Fireman]

Valvoline 75w90 synthetic. I get it at NAPA



Fireman

 

[adsharpe]

I had to drain/fill the rear on my '03 3500 DRW cause the dealer messed it up. After searching the net and locally, I finally decided on Shell Spirax S (synthetic) 75W90 GL5. Local Shell distributor sells 5-gl pail for $96 including sales tax. This oil is rated for humongous length of service (750k) in big truck trans and rears but I plan to change according to DC schedule. At about $5. a qt, it was the best deal, plus it is rated for real trucks. I'm sure you could pay about double or more for something else.

 

[CATCRACKER]

valvoline 75w 90 synthetic make sure you get syn b/c they have a syn/dino blend out there that can mislead you.

 

[GWHaley]

Amsoil 75w140, they also have an excellent 75w90.

 

[Bertram65]

Amsoil 2000 75/90, the rear took 4 quarts the front a little less than 3. I was going to get the Mobil1 GL-5 but the Amsoil was the same price.

 

[Vaughn MacKenzie]

Amsoil 75W90. Changed out the OEM stuff at 10,000 miles and it was looking pretty bad.



I didn't do the front axle, I had trouble locating the pumpkin and could only come up with a big black engine oil pan



Vaughn

 

[MGordon]

Ditto Amsoil 75w140.