I am doing the 60k maintenance myself. I'm pretty good with cars, been working on them for years. My only concern is a while ago I remember someone causing an oil leak in a car, but with over 100k miles, by switching from conventional to synthetic because something about the conventional oil was thick enough to get into small forming gaps and kind of sludge up and keep a leak from happening. And when switching to synthetic, that loosened up and the lighter slipperier oil got through. I didn't want something like that to happen to the Z, or something worse.
Thanks for the response!
P.S. anyone know of a cheaper place to get redline besides right from the company?
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