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Old 02-07-2011, 10:17 AM
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Front & Rear Diff Change ?

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
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Old 02-07-2011, 10:29 AM
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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.
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Old 02-07-2011, 10:53 AM
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I went with royal purple 75-140 in both.
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Old 02-07-2011, 11:41 AM
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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.
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Old 02-07-2011, 12:19 PM
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Quote:
Originally Posted by smokersteve View Post
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?
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Old 02-07-2011, 12:21 PM
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75w-90 front and 75w-140 in the rear.


Quote:
Originally Posted by rowcoach View Post
I went with royal purple 75-140 in both.
I see very little reason to use a thicker weight in the front.

Last edited by smokersteve; 02-07-2011 at 12:26 PM.
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Old 02-07-2011, 12:22 PM
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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

Last edited by smokersteve; 02-07-2011 at 12:26 PM.
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Old 02-07-2011, 12:59 PM
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Royal Purple here in all.
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Old 02-07-2011, 01:14 PM
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I got 2 gallons of Valveline Full syn 75/140 man that chit is expensive. 15 bucks a quart
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Old 02-07-2011, 01:41 PM
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Thanks steve!
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