
12-01-2011, 06:59 AM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
Lee, Three Peaks is right, that trans requires ATF Dextron II or III or equal oil. If that Royal Purple is not designed as a replacement for ATF that is a contributing factor. The synchros in that trans require a thinner oil for easy shifting. Thicker oil will cause hard shifting until the oil heats up.
Wayne
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