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05-24-2010, 06:28 PM
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Join Date: Sep 2009
Location: Hartford, CT
Posts: 97
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Recommended Oil Levels for IO-540
I'm sure this question has been asked before, but I can't seem to find it with the search engine.
What is the recommended oil level for an IO-540-D4A5?
It can hold 12 quarts, but I suspect you need to use much less than that.
For my RV-8A, anything over 5.5 qts on the 8 qt sump quickly exits the engine.
Aaron
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05-24-2010, 06:38 PM
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Join Date: Jan 2005
Location: Bellevue, NE
Posts: 524
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I NEVER have more than 10 in the sump and then only after a fresh oil/filter change. I keep mine between 9 and 9.5 although I suspect there are some that run even a little less. Defintely anything over 10 will blow out very quickly.
Bob
RV-10 N442PM
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05-25-2010, 12:15 AM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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Holy cow.......... we put in 8 and it seems to prefer 7.
Our leak downs are good too....5% typically. Has been this way since new.
We started using 9 but it seemed to pump it out all the time.
What does everyone else think?
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05-25-2010, 04:44 AM
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Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,326
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I typically ran between 7 and 9. Like Bob, I never put in more than 10 during an oil change, which resulted in a level of 9 once the filter filled up.
__________________
Randy Pflanzer
Greenwood, IN
www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold
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05-25-2010, 04:51 AM
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Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,398
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I find anything more than a 9.5 stick reading doesnt stay. I hold mine round 9.
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05-25-2010, 05:09 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Ditto...
...for me too,
Best,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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05-25-2010, 07:12 AM
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Super Moderator
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Join Date: Dec 2005
Location: Salt Lake City, Utah
Posts: 1,158
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9-10 for me
I will add at our just below 9 quarts. Just like everyone has said, anything over 10 will exit the engine.
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Scott Schmidt
Salt Lake City, UT
RV-10 N104XP (1280 Hours)
RV-12 N321UT (Sold)
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05-25-2010, 08:28 AM
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Join Date: Jan 2006
Location: New Smyrna Beach, FL
Posts: 1,339
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eight seems to work best for me
__________________
David Maib
RV-10 N380DM
New Smyrna Beach, FL
VAF Paid 1/21/2020
"In '69 I was 21, and I called the road my own"
Jackson Browne
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05-25-2010, 10:57 AM
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Super Moderator
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,624
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Yes, I agree with the less than 9 theories. I try to keep it at nine and it doesn't want to stay there. I've only got 90 hours on it, but am about ready to see what it does at 8.
Vic
__________________
 Vic Syracuse
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
Kitplanes "Unairworthy" monthly feature
EAA Sport Aviation "Checkpoints" column
EAA Homebuilt Council Chair/member EAA BOD
Author "Pre-Buy Guide for Amateur-Built Aircraft"
www.Baselegaviation.com
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05-25-2010, 12:29 PM
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Join Date: Mar 2007
Location: Denver, CO
Posts: 211
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11 gallons
I've got 11 gallons in mine right now 
...in storage.
__________________
RV-10 #40762 - 100 hrs+
Denver, CO
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