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Registered
Join Date: Aug 2005
Location: Fort Collins, CO
Posts: 332
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To try and answer your original, specific question regarding the outer appearance of this engine, I would say that as long as it is dry I would not get too concerned about the "patina" that this one seems to have. It is not that unusual. Porsche puts some kind of protective agent on the engines of the cars it sends to North America ("cosmolin"-like?) that frequently begins to look like this. You can spend a lot of time trying to remove it, but it does not seem harmful.
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2015 Porsche Macan S, Dark Blue Metallic
2011 BMW 328xi, Crimson Red
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