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BlueJay

Wet Clutch Compatible Oil

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I am new to ATV engines but have been working on mower engines for years. I saw another post on here about oil sources and someone mentioned “wet clutch compatible only”. I have been working on a TRX350 barn find and have drained the oil about four times for various fixings but I think I have it ready to go for the long run. The last fill I put in 10w-40 ND as per the SM weight specs (it said Honda brand) but it was conventional oil. What is the significance of “wet clutch compatible oil”? Thanks. 

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Oil should have JASO shown on the container and listed as meeting that specification.  
 

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I do have some wet clutch oil now. Apparently engine oil has friction modifiers that cause wet clutches to slip. I plan on putting the good stuff in once I am sure I don’t need to pull the front cover again and take it on it’s maiden trail ride. So far I have been just running around the back yard while I have been working on it. 

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Rotella T4 and Rotella T6 are both good JASO MA rated oils that are available everywhere.  Definitely get that conventional stuff out and replace with JASO MA rated oil.

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