Slight hot oil smell

[Wildhorsetrail]

I've noticed that once the engine is running at climb power (and less so in cruise) there is a smell of hot engine/oil in the cabin. Not strong, but definitely noticeable. Opening the cabin vent seems to help slightly. No sign of CO.

 

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[Bartman]

Remove the cowl and take a look. Push tube seals are often a source of leaking oil running down on the exhaust pipe and pretty obvious when it is happening. 

Could be any number of leaks as simple as above, and as bad as a cracked case, or anything between. 

[jaylw314]

Is your cabin heat closed all the way?

[Wildhorsetrail]

Should have mentioned that there doesn't seem to be any leaks. Oil consumption is in the realm of a quart every 5 hours.