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Registered
Join Date: Jul 2016
Location: Ayrshire, Scotland
Posts: 46
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I'm surprised that no one has mentioned anything about ZDDP, given that modern oils lack this additive and it's believed that a lack of ZDDP is the main reason for camshaft pitting on 911 engines
When my engine is rebuilt I'll be using a 10-40 mineral oil which has this additive, changed several times up to 1000 miles then replaced with a 10-40 fully synthetic again with high Zinc/phosphorus content.
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