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what gear oil

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Old Mar 8, 2016 | 10:11 AM
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Default what gear oil

1979 vette with limited slip diff rear noise coming from rear end left side what gear oil do i put in to get rid of the noise.
to replace whats in there now.

Last edited by Rlanza; Mar 8, 2016 at 10:13 AM.
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Old Mar 8, 2016 | 10:33 AM
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If it's coming from one side it's not the diff (as it's in the center).

As for gear oil, I've had good luck with Mobil1 75W-90 + 1 bottle of GM limited slip additive.
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Old Mar 8, 2016 | 11:07 AM
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Originally Posted by Rlanza
1979 vette with limited slip diff rear noise coming from rear end left side what gear oil do i put in to get rid of the noise.
to replace whats in there now.

Noise on one side only would indicate a failing wheel bearing. If it makes a "growling" sound all the time that's what it is.
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Old Mar 9, 2016 | 09:24 AM
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Differential clutch noise is usually while turning at slow crawl.. if its growling in a straight line on only one side ,its likely your Spindle bearings on that side ... Replace both sides or you will be doing this again soon
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