Front & Rear Diff Change ?

[BrownieHeavyHauling136]

So which oil is the best to go with amsoil or royal purple. Also just double checking 75-90 for the front and 75-140 in the rear. I do alot of towing. Thanks Guys

[DesertSmoker]

I put Royal Purple in the front and rear. It did help the stock rear diff lock engage sooner and it did hold a little longer before it would 1 wheel when boosting.

[rowcoach]

I went with royal purple 75-140 in both.

[smokersteve]

I used amsoil in front, rear, and transfercase and very happy that I did. The 4x4 system is not as pronounced as when I had the stock fluid. I changed the fluids at 30,000 miles.

I am not a big fan of RP products.

[nos487]

Originally Posted by smokersteve

I used amsoil in front, rear, and transfercase and very happy that I did. The 4x4 system is not as pronounced as when I had the stock fluid. I changed the fluids at 30,000 miles.

I am not a big fan of RP products.

What weight's did you use in diffs?

[smokersteve]

75w-90 front and 75w-140 in the rear.

Originally Posted by rowcoach

I went with royal purple 75-140 in both.

I see very little reason to use a thicker weight in the front.

[smokersteve]

75w-90
http://www.amsoil.com/storefront/svg.aspx

75w-140
http://www.amsoil.com/storefront/svo.aspx


Transfercase
http://www.amsoil.com/catalog.aspx?code=ATFQT-EA

[headviking]

Royal Purple here in all.

[mmandley]

I got 2 gallons of Valveline Full syn 75/140 man that chit is expensive. 15 bucks a quart

[nos487]

Originally Posted by smokersteve

75w-90
AMSOIL - SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-140 (SVO)

75w-140
AMSOIL - SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-140 (SVO)


Transfercase
AMSOIL Synthetic Automatic and Manual Transmission Fluid

Thanks steve!