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Old 06-13-2014, 03:02 PM   #50 (permalink)
Jordo!
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Long story short: After reviewing the used oil analyses (UOA's) on my Z and those of others using various oils for daily driven stop-and-go VQ engines, I concluded around 4.25 - 4.5K was about ideal. Earlier changes suggested no benefits and later intervals pointed to very slight upticks in wear.

I think that value range is also roughly at the median of Nissan's two recommended intervals, which I'm guessing is unlikely to be a coincidence.

All that in mind, a few hundred miles up or down will not make a difference of note.
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Last edited by Jordo!; 06-13-2014 at 03:04 PM.
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