Oil Consumption Increas[ing] ?

[BillL]

Originally Posted by g zero

Never got the quick drain thing . I prefer a 2 foot AN8 or 10 hose fitted to the oil drain and a plug or cap on the other end . When you change the oil the hose goes out the bottom of the cowl , when done attach the capped end to the engine mount with a zip tie or adel clamp .

Proven -Good and Reliable.

[Vlad]

Originally Posted by BillL

When you are flying under load, how do you know that the blow by has not changed?

Anyway, blow by increase, from new, is an indication that the top not second rings are not sealing as well. The oil ring is primarily responsible for the oil use control. That can happen independent from the compression and scraper ring. Not usual, but it can happen.

One reason (just one of many) for oil use increase can be the wear of the cross hatch. This allows a thicker oil film to form under the ring on the down stroke and that oil gets pumped back up on the up stroke. There are other reasons, but it also can occur as the oil control ring lands become too wide and begin allowing hydrodynamic lift along with the decrease in crosshatch. Again - leaving too much oil on the cylinder on the down stroke. Typically, all of this happens together - and is why a leak down test is a good indicator for wearout.

This is not much help for your issue, but, like above, it is either burn, blow or leak. This is only the burn portion.

Interesting thanks Bill.

[skylor]

Originally Posted by g zero

Never got the quick drain thing . I prefer a 2 foot AN8 or 10 hose fitted to the oil drain and a plug or cap on the other end . When you change the oil the hose goes out the bottom of the cowl , when done attach the capped end to the engine mount with a zip tie or adel clamp .

Originally Posted by BillL

Proven -Good and Reliable.

Unless one forgets to wrench tighten the plug on the hose. At least with the quick-drain valve, once it's installed and safety wired, the valve can only be open or closed, not "loosely" closed and waiting for an inopportune time to open.

Skylor