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  1. #1

    Default fluids for 90' k1500 (tranny-transfer)

    bought this truck for work and runs great!!! its a 1990 chevy k1500 stepside...noticed some leaks underneath truck.. no puddles, just wet.. also noticed at 60 mph it sounds like a tuning fork...? noticed that fluids looked low, so had buddy fill em... supposed to to be chevy head... he ended up putting 80-90 in everything... didn't know this till went to use 4x4 ... makes a whining noise...??? what should i drain and fill with what? lost... first 4x4 and don't want to screw it ANY HELP WILL BE APPRECIATED!!! thanks in advance also noticed that "throw out bearing" makes rattle and noise when clutch is not engaged... seen greaser... ??

  2. #2
    Sr. Engineer
    Join Date
    Dec 2011
    11-22-boogie woogie avenue


    Transfer transmission fluid... rears 90 weight. transmission dextron 3 ...5w-30 oil engine chevys do not like nothing else. Grease all .

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