Increased Oil Consumption

[RVG8tor]

We'll I did the full inspection of the separator, oil change and analysis, compression check etc. I have flown almost 7 hours and the oil level has hardly moved.

I can only surmise that my high oil consumption was self induced. I do some aerobatics often but have not gone negative in a long time. I do go to .5 G on occasion to gain energy or to make a roll look better. This must have been enough to make me exceed the capacity if the oil separator and dump some out the exhaust valve.

I have avoided aerobatics on purpose to see how the oil consumption would track, it appears fine.

Just wanted to close out this issue for anyone who finds this on a future search.

Cheers

[Mike S]

Originally Posted by RVG8tor

Just wanted to close out this issue for anyone who finds this on a future search.

Cheers

Good of you, I wish everyone would do this.

[DanH]

Originally Posted by Mike S

Good of you, I wish everyone would do this.

+1...good man Nemo.

Noticed something in a previous post that I didn't know. The separator's oil return outlet (out to the crankcase) has a restrictor fitting? How large is the bore?

[RVG8tor]

Originally Posted by DanH

+1...good man Nemo.

Noticed something in a previous post that I didn't know. The separator's oil return outlet (out to the crankcase) has a restrictor fitting? How large is the bore?

The restricter is built into the seperator, I think Allen said it is around 1/8".

Cheers

[PerfTech]

Originally Posted by RVG8tor

We'll I did the full inspection of the separator, oil change and analysis, compression check etc. I have flown almost 7 hours and the oil level has hardly moved.

I can only surmise that my high oil consumption was self induced. I do some aerobatics often but have not gone negative in a long time. I do go to .5 G on occasion to gain energy or to make a roll look better. This must have been enough to make me exceed the capacity if the oil separator and dump some out the exhaust valve.

I have avoided aerobatics on purpose to see how the oil consumption would track, it appears fine.

Just wanted to close out this issue for anyone who finds this on a future search.

Cheers

....I guess I should have told Mike this earlier as it could have possibly saved him some work, but it slipped my mind. Should anyone else experience a similar issue and think it may be attributable to an aerobatics issue. Have a friend in another aircraft observe a maneuver, paying particular attention to the exhaust. If oil is exiting the engine in this manor, you will see a large poof of smoke from the pipe, just like a smoke system. This will verify the breather system as the culprit should it be the case. Thanks, Allan....