Any of you use M1 in your gears?

[mikeg5]

out of curiosity how many of you use M1 in your gears (not tranny)? if so have any of you had a UOA done? or know that it works as well as they say they do?

 

[SubLGT]

I'm using it in the rear of my Subaru. No UOA from me. Hopefully Exxon has not cheapened the gear oil over the last few years, since taking over Mobil.

 

[mikeg5]

well imo they have.. a handful of very knowledgable guys have mentions (as far as the motor oil goes) that they have gone very sub par as far as wear is concerned.. i cant say more than that but considering the source i wont use M1 in my motor but as for the gears no issues so far lol.

 

[unDummy]

I've used M1 in manuals, transfer cases, and front/rear-ends with no problems. No UOAs but I've never seen a failure caused by M1 gear or motor oils.

 

[wizzells]

Quote:

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well imo they have.. a handful of very knowledgable guys have mentions (as far as the motor oil goes) that they have gone very sub par as far as wear is concerned.. i cant say more than that but considering the source i wont use M1 in my motor but as for the gears no issues so far lol.

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??? What does this contribute other than speculation?