P700 Diff Fluid (Gear Oil) - SAE 80 vs. 75W-90 vs. 75W-140

[Berob]

New 2014 P700 owner here with limited mechanical experience and knowledge. I'd like to do a front and rear diff change on my machine and was curious as to which diff fluid to use. The manual specs SAE 80, but I see others using 75W-140 and 75W-90 and really don't know the pros and cons of each and whether all of those are acceptable. I saw TFlynn's nice tutorial and believe he used 75W-140, so I'm sure that's fine but I'm just trying to learn more as I go. Thanks.

 

[Admin]

 

[Baldeagle]

New 2014 P700 owner here with limited mechanical experience and knowledge. I'd like to do a front and rear diff change on my machine and was curious as to which diff fluid to use. The manual specs SAE 80, but I see others using 75W-140 and 75W-90 and really don't know the pros and cons of each and whether all of those are acceptable. I saw TFlynn's nice tutorial and believe he used 75W-140, so I'm sure that's fine but I'm just trying to learn more as I go. Thanks.

They are all good choices. I think the most important consideration is to use a hypoid oil regardless of the weight. Check you owners manual. I think it call for hypoid. I use it in my 700. Always in lots of water and even with vent lines raised I quite often get moisture. Change regularly.


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