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Old 01-26-2012, 07:30 PM   #43 (permalink)
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Aegean C - '17 Honda Civic LX
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I don't put anything from the catch can back into the engine, I just recycle it. It's not just oil, but a mixture of whatever crap shows up in the crankcase, unburned fuel, cylinder blow by, water vapor etc. It's mostly oil but I wouldn't try to lubricate an engine with it.

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