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  #11  
Old 10-19-2012, 11:06 AM
cdmiller's Avatar
cdmiller cdmiller is offline
 
Join Date: Jan 2005
Location: Battle Ground, Washington
Posts: 138
Default 5 1/2 works best for me

My IO-360 M1 does best at about 5.5 quarts. I add one when it gets down to about 4.5. It seems to use a quart about every 15 hours.

Dan Miller
RV-8 Superior IO-360 M1. 1200+ hours
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  #12  
Old 10-19-2012, 11:19 AM
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JoeBlank JoeBlank is offline
 
Join Date: Mar 2005
Location: Molalla, Oregon (KOL05)
Posts: 529
Default Test the theory...

JJ,

I target 5 - 5.5 Qts on the stick and the belly sees only a small amount. (The smoke system serves to clean that off everytime it's used... ) If I'm doing long X-country work, I'll fill it to 6. For folks in hotter climates or who are running the IO-360-A* 200 HP angle valve motors, you may want to run a slightly higher level to counteract the higher oil temps. The piston squirts on those engines use the oil as an additional cooling medium.

I recently ran a test on my IO-320-D1A to determine if the oil was being blown or burnt. I rigged up a small catch can with a shorter breather line to collect anything that was going overboard. Filled the oil to 6 qts, and then flew for 1 hour. The amount of oil that was collected was less than half of a thimblefull. Suprisingly not that much. So it meant that my increased consumption (1qt/5 hrs) was probably being burnt. With that and all of the other evidence collected, the cylinders are coming off for inspection and a TOH. Here's a pic of the Hi-Tech collection system...

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RV-6
IO-320-D1A
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Van's Aircraft Inc. Technical Support-Retired
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  #13  
Old 10-19-2012, 11:30 AM
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Mike S Mike S is offline
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
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Default

I love the duct tape
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Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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  #14  
Old 10-19-2012, 11:36 AM
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sirlegin sirlegin is offline
 
Join Date: Feb 2006
Location: Keller, Texas
Posts: 309
Default

5 1/2 quarts for the 0-320
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Nigel
RV9A-N113SQ
52F
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  #15  
Old 10-19-2012, 12:13 PM
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flyboy1963 flyboy1963 is offline
 
Join Date: Oct 2008
Location: Lake Country, B.C. Canada
Posts: 2,416
Default 0-320 RV-9a

I run mine between 6 and 7, with almost nothing ever on the belly. On a x-country I topped up to 7.5 and blew a part of that out.
do I recall..... Lyc. says to run with no more than 8, and no less than TWO?
what they heck kind of advice is that?
are the guys blowing or burning more running at higher rpm, or banking more than 20 degrees?
what's the diff?
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Lake Country, BC
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  #16  
Old 10-19-2012, 12:36 PM
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Brantel Brantel is offline
 
Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
Default

Quote:
Originally Posted by Joe Blank View Post
I recently ran a test on my IO-320-D1A to determine if the oil was being blown or burnt. I rigged up a small catch can with a shorter breather line to collect anything that was going overboard. Filled the oil to 6 qts, and then flew for 1 hour. The amount of oil that was collected was less than half of a thimblefull. Suprisingly not that much. So it meant that my increased consumption (1qt/5 hrs) was probably being burnt. With that and all of the other evidence collected, the cylinders are coming off for inspection and a TOH. Here's a pic of the Hi-Tech collection system...

I know that how the vent tube is positioned can have a big effect on how much oil is sucked or blown out. In my case, if I go above 6 I get raw oil on the belly and it drips out of the tube afterwards. This makes me believe that I am not burning it.

My tube extends down and back between the exhaust pipes and sticks about an inch past the cowl. I have a 1/4" hole drilled in the tube about 5" up from the end. Not sure if my setup is optimal for reducing the amount that is blown/sucked out. A buddy of mine had his per the plans/manual basically dumping out right on an exhaust pipe. This led to a nasty brown residue on everything under the cowl and on the firewall so I decided not to follow his setup. He ended up changing his to something different after cleaning up the mess.

Wonder if the fact that you had that tube in a cup with no suction/pressure on it that it skewed your results?
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  #17  
Old 10-19-2012, 12:44 PM
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Jim Kiloh Jim Kiloh is offline
 
Join Date: Jun 2005
Location: Cypress TX
Posts: 120
Default O-360

5 1/2 quarts is the magic number for my O-360 A1* with dual P-mags. Any more just ends up being cleaned off the belly. 1 quart every 10-12hrs.
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Jim K
Cypress, TX (T51)
RV 7A-
O-360-Dual P mags-GRT EFIS-Tru-Trak AutoPilot
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  #18  
Old 10-19-2012, 02:52 PM
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Greg Arehart Greg Arehart is offline
 
Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
Default

Same Superior engine in mine is happiest at 5-6 quarts. Start around 6 and add a quart when it gets to 5 (takes ~25 hours).

Greg
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RV-9B (Big tires) Tipup @AJZ or CYSQ
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  #19  
Old 10-19-2012, 04:16 PM
tmlkbr tmlkbr is offline
 
Join Date: Mar 2012
Location: S?o Paulo - Brazil
Posts: 13
Default

Very happy with this thread, above 6 qrtrs it spits outs the extra oil, seems to be happy at 5 1/2, although manual says minimum is 6, Lycoming IO360 M1B. Flying over the Caribbean & Amazon, I did waste some oil trying to keep it at 7qrts, couldn't risk it.
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RV7 Driver Only

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  #20  
Old 10-20-2012, 06:43 AM
N208ET N208ET is offline
 
Join Date: May 2007
Location: St. Helens OR
Posts: 429
Default I was happy at 6

usually let it get down to 5 before dumping another one in. Having seen this post I might let it down to 4 1/2. I am running a Narrow Deck 0-360 with chrome cylinders burning/puking around a quart every 7 hours.

Randy
8A
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