Motor Oil In Transmission?

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12-09-2008, 02:19 PM

99 Blue Bird

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Motor Oil In Transmission?

Has anyone ever heard of using 5-30 or 5-20 motor oil in there m6? i read about it in a couple Hot Rod Magizine issues. Has anyone ever done this in here? Would anybody recommend doing this instead of using atf?

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12-09-2008, 02:23 PM

blue99fbody

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why would you consider just get mobile 1 atf like your supposed to u know it works

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12-09-2008, 02:39 PM

85MikeTPI

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It will ruin the fiber blocker rings in a jiffy.. While gear/motor oil was used in the older transmissions, they had brass blockers which needed the heavy fluid. Just say no....