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NV4500 locked in 4th


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12 minutes ago, Mopar1973Man said:

I'm talking about PenzOil Syncromesh. It does not meet the synthetic spec. 

Sorry about that, thought it was a broad statement on all synchromesh. At the same time the guy I know that has a transmission shop for last 40 years told me if they are unsure what to put in they use pennzoil synchromesh and never had a failure due to that oil. :shrug:

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