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Why no love for M1 gear oils? #5191358 08/19/19 03:02 PM
Joined: Nov 2013
Posts: 374
Z
zuluplus30 Offline OP
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Joined: Nov 2013
Posts: 374
Searching the threads I see lots of negativity towards M1 gear oils (not Delvac). Anybody care to shed some light? Getting ready to change my Silverado again w/ G80 locker and already purchased M1 75w90 for the job.

Re: Why no love for M1 gear oils? [Re: zuluplus30] #5191369 08/19/19 03:15 PM
Joined: Oct 2010
Posts: 7,533
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A_Harman Offline
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I did a complete fill of M1 75w90 (7 quarts) in the Dana 80 in my Dodge. Even though the bottles said that it was for limited-slip differentials, the rear end would chatter in tight slow-speed turns. So I bought the LS additive separately; 2 4-oz bottles and problem solved. On other fills I have used Walmart Supertech, and didn't have a problem with limited-slip chatter. So I avoid M1 gear oil.


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Re: Why no love for M1 gear oils? [Re: zuluplus30] #5191389 08/19/19 03:35 PM
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MolaKule Offline
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Sorry guys, these "No Love" threads just create ridiculous bickering.


The value of a scientific theory is its ability to prompt further study, not that it has any relation to the established facts of scientific reality.
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