Just took delivery of my new G6. Mineral oil up until 25 hour inspection. Just burned 2 quarts of regular oil during the first 5 hours after the 25 hour inspection (OAT 50 degrees F). Is that normal?
What did it burn in the 25 hours before the inspection? By 25 hours, the majority of the break-in should already be completed, and the oil consumption should be lower and stable. On the surface, that’s a lot of oil to burn through a motor with 25 hours on it. What oil level have you been trying to maintain, 8qts? Something lower?
It would depend on what your starting oil level was?
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To your problem - How long did you wait after shut-down to check the oil? It takes a good 24 hours for the oil to drain out of the engine back to the pan.
If you were still burning a lot of oil at 25 hours you might not have wanted to put regular oil into the engine, but I’m not a mechanic.
Also, how much oil did you add after when you did the oil change? The filter is going to eat up a quart straight away!
Burned about a quart every 10 hours, which seems normal. I try to maintain at about 6 -7 quarts.
Hmmm… I measured about 18 hours after shut-down. Could explain part of the problem. The mineral oil consumption in first 25 hours appeared normal at about 10 hours per quart, and that was running hot at 80% power during break-in.
I would watch it and continue to fly. I would suspect the higher consumption was a measurement artifact associated with a change in your process at the time of the inspection. If you normally keep the plane at 6-7 quarts, start your measurement process once you get back there. The shop probably put the oil back at a full 8qts on the stick, which in many planes will result in a bunch of oil being blown out the breather.
Thanks Jim. Think you’re exactly right.
I am in the same process. Have 40 hours total. My 2019 sr22 vented 1 quart per 6 hours. Now the 2022 seems to blow more out. I am trying to figure out the dip stick. Not sure if a quart on the dip stick is a quart? Also is the measurement the same per quart from 5 quarts to 8 quarts on the stick.
I haven’t noticed measurement differences on the dip stick. I’m now at 43 hours and consumption appears to be leveling out at a more normal level of one quart per 8-10 hours.
Think I am at 6. Same hours. Tired of washing belly of sr22. Lb
I don’t fill higher than 6.5 or 7.0 on the stick. Think that helps.
I have been using the 6 quart level.
My opinion as I took delivery of a 2020 SR22T.
- Burning 2 quarts in 5 hrs is excessive in my opinion. I was burning MAYBE 1 quart in 15 hrs. Keep in mind that is Tach time and not Hobbs as that how they base all time on when you have a Tach meter.
- Continental requires 8 quarts when full. I was told don’t ever go below 6. So if you check the oil and it shows 6, you need to add oil. When you do I was told you should add 2 quarts. btw I was told by the Cirrus Service Center in Dallas.
- On my plane I did not see an excessive burn rate between 6-8 quarts.
I think yes they are required to fill to 8. And it’s true that as I recall the checklist wants 6-8. But from there each plane seems to be different, including that the marks on dipstick and what’s actually in plane may not coincide.