NP203 juice

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Joined
Jun 13, 2003
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What lubricant is everybody running in their 203 doublers? I currently have regular gear oil in mine, but now that its puking out of the breather hose that is Teed into my auto trans breather possibly contaminating the trans fluid, I looked online and saw a lot of possible fluid options. It looks like regular motor oil is what the factory recommends, but deleting the chain/planetairies probably negates the need for lighter weight oil. I'd like to just throw ATF in and not worry about contamination.
 
Just gear oil. What he said too ^^^ on the breather.
 

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