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Old 02-14-2022, 12:56 PM
dan carley dan carley is offline
Join Date: Jan 2005
Posts: 780
Default How much oil

I have a 0360 in my Rv6
Seems to blow out oil Iím at 7 quarts
What do most of you put in
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Old 02-14-2022, 01:05 PM
hecilopter's Avatar
hecilopter hecilopter is offline
Join Date: Mar 2005
Posts: 398
Default I put in 6 at oil change

and add a quart when it gets to 4. Usually have to add twice between changes.
Superior XP-360 and 1600 hrs.
Rusty "Rooster" Williams
N357RV RV-7A Tip Up (flying and Painted!) - 1560+ hrs.
Superior XP-360, carbureted, Hartzell 74" Blended Airfoil Prop
Grand Prairie, TX
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Old 02-14-2022, 01:09 PM
wawrzynskivp wawrzynskivp is offline
Join Date: Feb 2018
Location: Incline Village Nv
Posts: 334
Default Blow off point

I'll let the A&Ps share their number here for what's best.

I have not found the blowoff level in my airplane yet. Brand new Thunderbolt YIO-390 with Superior sump, using break in oil and prescribed running power levels to 50 hrs. I use what seems like a lot of oil compared to other claims. ~7-8 hrs/qt But have had quite a few experienced folks tell me that's about right. I have run from as low as 4.5 qts (on the stick) to perhaps 7 quarts and did not in that range see any precipitous increase in consumption. The only oil trace I can find is down #1 intake tube. Have checked that guide and can't feel any difference between it and the others.

For what it's worth.
Vincent 'Duck' Wawrzynski
LtCol USMC (Ret)
F-18/F-5/F-16, AH-1/UH-1/CH-53/CH-46, C-130/AN-2
RV-7 complete with all the gadgets
Aviation Safety/Accident Inspector/Investigator
San Jose State University Av Faculty, CFI/GFI S/M (I)
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Old 02-14-2022, 01:13 PM
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RicoB RicoB is offline
Join Date: Mar 2017
Location: Glendale, CA
Posts: 461

My engine holds well 6qts, itís aO-320 E3D, if gets to 5 I will add qt. Seems to burn a qt every 20 to 25hrs
Rico Burgos
2018- RV9a at AZ82 and KWHP
1959- C-150 at KMOD (Sold)
2022 dues PAID
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Old 02-14-2022, 01:17 PM
wilddog wilddog is offline
Join Date: Feb 2008
Location: va.
Posts: 753

IO 370, I add 1/2 qt oil when it goes below 5qts to keep it between 5-5.5. Anything over that seems to blow out but I do fly some acrobatics in my -8. Engine has about 110 hrs since new and burns a qt in 10-14 hrs.
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Old 02-14-2022, 01:28 PM
dmattmul dmattmul is offline
Join Date: Dec 2015
Location: Spring Hill, FL
Posts: 373

New Thunderbolt YIO-390 EFII, Stock sump, W100plus since 120 hours. Now almost 200 hours. I've tried running it down to 4 qts and adding a qt along with 5 qts and adding a qt. Does not seem to make a measurable difference. Was also at 7-8 hours per qt and now maybe 8-9 hours per qt. I've known some builders as low as 6 hours per qt same engine. I'm getting some "spitting" of oil from #3 intake tube. So far been flawless. Initially was concerned about what I felt was greater oil usage than normal but now I'm hearing of several engines with similar burn rates. I had a several oil leaks around the head gaskets and took some time before I could fly it (probably less than 20 mins run time) and initially concerned I might have glazed the cylinders but now seems normal.
RV-14A QB builds, Lycoming 390 Thunderbolt arrived July 2019, Garmin avionics, Vertical Power, EFII-32 Ignition and Fuel, Whirlwind 300-72, Earth-X batteries, Parts became a real airplane 8/15/2020.
Started RV-10 Nov 2020. Empennage arrived (Built) Working on QB kits. Garmin avionics, Vertical Power, EFII-32 Ignition and Fuel, Whirlwind 3 blade, Earth-X batteries, real airplane hopefully early 2024. Paid subscriber and more. (Worth every dollar contributed).
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Old 02-14-2022, 01:36 PM
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Jetmart Jetmart is offline
Join Date: Sep 2019
Location: Windsor, Ontario
Posts: 539

Van's run their demos between 4 - 6 quarts. I do the same.
Glenn Martin
Windsor, Ontario
1941 Tiger Moth
2017 Waco YMF-5
RV-14 Kit # 140694 - First Flight June 22, 2021
RV-14 A - Kit Ordered February 8, 2022
2022 Dues Paid
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Old 02-14-2022, 01:46 PM
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turbo turbo is offline
Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 3,263

I calibrated my dip stick after an oil and filter change @ 4 5 and 6 quarts.
TURBO YES =VAF= Payed Jan2022
Ed D'Arcy
RV6-A 5,400+ hrs, R-44 1,700 hrs, Helicycle traded for 33 FFR coupe, 300 young eagles flown
Stuart, Fl / East Hampton,Ct / Virgin Gorda, BVI - villa sold.
addicted pickle ball player
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Old 02-14-2022, 01:54 PM
odens_14 odens_14 is offline
Join Date: Jun 2007
Location: West Central, MN
Posts: 372

I change with 6 qts, I'm usually right under 5 qts @ 50hrs when I do the next change. It works out nice that cases make two oil changes.
Chris Odens
West Central, Minnesota
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Old 02-14-2022, 01:55 PM
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chrispratt chrispratt is offline
Super Moderator
Join Date: Oct 2005
Posts: 824

A friend at Lycoming told me to keep the oil in my O-360 between 5 and 6 quarts. Anything above 6 is subject to going overboard. You can go lower as others have noted.

Chris Pratt (2022 VAF DUES PAID)
RV-8 Flying, 900+hours
Lycoming O-360-A1A, Hartzell CS
52F (Northwest Regional, TX)
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