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rearend gear fluid.....type?

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Old Sep 16, 2009 | 11:41 AM
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VGLNTE1
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Default rearend gear fluid.....type?

When i redid my diff about a year ago, I dont remember the weight, but I know I used redline with the GM additive. What weight do I get?

Also, the 4.10 is starting to whine pretty loud. It has never leaked, but has anyone noticed fluid being used in the diff?
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Old Sep 16, 2009 | 02:15 PM
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Originally Posted by VGLNTE1
When i redid my diff about a year ago, I dont remember the weight, but I know I used redline with the GM additive. What weight do I get?

Also, the 4.10 is starting to whine pretty loud. It has never leaked, but has anyone noticed fluid being used in the diff?
If you want to use Redline get the 75/90 (NOT the 75/90NS) the straight 75/90 already has the friction modifier in it and you don't need additional modifier.
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Old Sep 16, 2009 | 04:27 PM
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You can Mobil 1 synthetic 75w-90 gear oil with the friction modifier already in it as well. Just look for the "LS" prefix on the weight.
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