Thread: Newer Oils in Older Engines
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Old March 7th, 2013, 03:34 AM
bigblockv6 bigblockv6 is offline
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Default Re: Newer Oils in Older Engines
Synthetic oil is just fine specially in newer engines with roller cams, older engines such as the GMC V6 with flat tappet cams will need zinc additive added to the oil or the results may end up with a flat cam.
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