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Old 05-21-2023, 08:56 AM
todehnal todehnal is offline
Join Date: Jan 2005
Location: Kentucky Lakes area in KY
Posts: 1,014
Default Burping Oil Tank

I always burp before each first, and last flight of the day. The end of the day burp has not changed. Following a 10 minute rest after shutdown , typically 4 to 6 compressions will usually result in the burp. However, if I end up with a couple of weeks between flights and I check the dip stick first, I find it to be scarily low. and it will take closer to 30 plus compassions before getting the burp. I always do very slow pulls, with a hesitation at the compression point. So my question is, does this sound normal, and what has your experience been? I look forward to you comments. Thanks, Tom

Legacy RV-12, 600 hrs. TT
2013- RV12, Kit #119. N123M First flight Nov21. It's a keeper!
1998- RV-9 tail kit, built and sold
1989- RV-6 tail kit, built and sold
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Old 05-21-2023, 09:06 AM
funflying funflying is offline
Join Date: Oct 2006
Location: arvada, co
Posts: 546

I too have 620hrs and my experience with the different burping times are similar to yours. But remember why you burp a Rotax with a remote oil canister/dry sump configuration. The burping process allows you to check the oil level and with only 3 liters the level is critical. Fortunately this little engine is very good about not using or leaking oil.
Patrick Claar
Arvada, CO BJC
RV12, #401, Flying 2013, N612PC
RV6, 1996-2010 sold
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Old 05-21-2023, 10:54 AM
seagull seagull is online now
Join Date: Dec 2019
Location: Highland, CA
Posts: 615

My plane is hangared and I am the only one with a key. I check the oil every 5 hours unless there is oil in the floor or belly of the plane, (never). I check at the end of a flight when the oil is still warm and transfers better. Warm oil at 3/4 stick is the same as cold oil at 1/2 stick. It is much easier to check it warm.
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