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Re: Dextron or 80/90 Gear Oil in MY6/A833 4SPD?
I found this on another forum....
Straight from a Chevrolet Flint Assembly Line supervisor, 1979-1986, it uses ATF!!
Owners GM manual info:
4-Speed Overdrive (RPO MY6) Dexron II Automatic Transmission fluid GM Part No. 1051855
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