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Old 02-08-2013
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Re: Oil in exhaust?

I think you can trust your dipstick... Check it with the engine off and wait a couple of minutes for the oil in the galleys and lube system to drain back to the pan.

What you saw was probably soot/unburnt fuel rather than oil (or mud, for that matter - esp if you sailed off and didn't churn up any silt with the prop) If the black is unusual - ie - you've run at 2500rpm without issue previously then something may have changed.. but if it's fairly new-to-you and this is the first time you noticed it that's another thing. You might be overpropped, that can lead to what you describe, or your prop could be dirty/fouled and causing the engine to run at a higher load, either can lead to smoke/soot at higher revs...
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