Separation Anxiety: M-20 Turbo's Air/Oil Separator Gets the Job Done

Air/oil separators have been around a long time. They are tapped into the crankcase breather line and, using centrifugal force, return the oil being vented back to the crankcase. The result is a cleaner aircraft and reduced oil consumption. The newest entrant in this market is M-20 Turbos, whose recent STC from the FAA covers some 200 aircraft, including the Piper Comanche owned by AVweb's Dave Higdon. Dave recently installed one of the M-20 units; here's his report.

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