Massive blue smoke

[Airways]

Today I had a massive trail of blue smoke coming out of the exhaust after landing.  So clearly I'm burning oil iso AVGAS.  Is this a known issue with the M20K ?   Oh yeah, I grounded myself 'till I get feedback from the maintenance guys

[kortopates]

The first thing to check is the Turbo  pumping oil out through the seal. This could be from a checkvalve that's blocking the return line to the scavenger pump line, or the scaveger pump not keeping up  or it could be a worn garlock seal on the turbo shaft as well. But usually the later only leaks initially when flying high where the Turbo is really spinning. Its not spinning that fast in low power. Hence the suggestion to check that the return line is able to suck up oil faster than what the engine is pumping in and if not you know where to focus: check valve and scavenger pump. 

[Airways]

Mooneyspace is priceless.  I can’t say that enough...