weird you used motive and got that unless you did not run them through a break in or if it has synthetic. If you have syn. get that out of there and put regular oil back in with the additive and try that. I put in synthetic in mine and got crazy noises until I ran brake cleaner all over the posi and gears then went back to standard oil and additive.....some of this stuff does not like synthetic just like transmissions with performance clutches and or converters.
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Eric
CURRENT CARS
68 Firbird 400ci convertible
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