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I have a 2008 Cayenne S with 45k miles. When it is colder than about 50F the engine warms up normally but a lot of condensation "smoke" comes out of the exhaust. Normally in most cars the exhaust system would warm up and the condensation smokes goes away. I can drive 100 miles in cold weather and this continues. There are no trouble codes on my Durametric and oil analysis shows no water/coolant in the oil. The engines does not burn excessive amounts of oil. This only happens when it gets cold. Any ideas what could cause this or is it normal?

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You may want to try doing a compression test on it while it is cold and compare that to when it is warm. Could be the rings or valves are not seating properly when cold, and when the engine warms and they expand it seals.

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This is a normal phenomenon, by the length of the exhaust, the rear end cools too much down at cold outside temperatures, the hot exhaust gases condense and forms water vapor. In case of a blown head gasket for example, there would also be vapor formation at temperatures higher than 50 F.

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Normal and it all depends on the outside temp. I could drive 800 km and vehicles where I live will all do this.

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