need your help

itsmekippy

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ok guys. i bought my goat used, its an 04, has 23k miles on it, and so i know it sat for sometime, as it was an old guys who barely drove it. my questions are, when should i change the trans and diff fluid, since it sat, and for GM guys, what should i use to replace the fluid, such as any special brand or type since its LSD.
 
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itsmekippy

itsmekippy

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alright. the trans looked fine, and i didnt wanna crack the diff unless i needed to. what about when i DO need to change it though, should i use a sythetic, or regular GM stuff?
 

bikrboy128

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GM says dextron VI for your trans and 80W-140 synthetic for your rear differential. when you do it is all a matter of how hard you are on the car.
 

bikrboy128

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there is a TSB about this. according to GM "Current and prior automatic transmission models that had used DEXRON III must now only use DEXRON VI."
dextron VI is a much better fluid than III anyway.
 
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itsmekippy

itsmekippy

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oh yes...i saw this somewhere.....and i cant remember where
 

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