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02-09-2012, 08:36 AM
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Join Date: Apr 2011
Location: Gaspe, Qc
Posts: 139
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Safe oil temp for take off ? (O-360)
Is there an recomended oil temp we should try to obtain before take off?
Mine is a O-360.
I'm wondering particularly for winter ops...
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02-09-2012, 08:43 AM
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Join Date: Jun 2005
Posts: 3,275
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I have no hard data to back it up but I use 100 deg F. I also use a oil sump heater.
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02-09-2012, 08:53 AM
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Join Date: Mar 2005
Posts: 179
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Information from Superior says minimum for takeoff is 75 degrees F.
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Jim Percy
SoCal
FFI Wingman
RV-7A, XP-O-360
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02-09-2012, 08:54 AM
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Join Date: Oct 2005
Posts: 1,516
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100F
Second that!
100F according to the GAMI people.
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Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 600 plus hours
Running on E10 mogas
Don't believe everything you know. 
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02-09-2012, 09:06 AM
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Join Date: May 2007
Location: Quincy, Florida
Posts: 680
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oil temperature
Oil at room temperature (75 degrees) flows well enought to lubricate the engine. I always wait until I reach at least 75 degrees before a get the engine RPMs above 1000.
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02-09-2012, 09:16 AM
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Join Date: Feb 2005
Location: Chesterfield, Missouri
Posts: 4,514
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Piper says in the 180 "G" hand book regarding warm-up and ground check,
"Check both the oil temperature and pressure. The temperature may be low for some time if the engine is being run for the first time of the day, but as long as the pressure is within limits the engine is ready for take-off."
The Lycoming Operators Manual (O360) simply says,
"Engine is warm enough for take-off when the throttle can be opened without the engine faltering." No mention of OT at all.
I feel ok about taking off when the OT gage comes off the cold peg.
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RV-7A...Sold #70374
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02-09-2012, 09:25 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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90° for run-up and 100° for takeoff for me. I have seen what that stuff looks like when it is cold and there is no way I would subject my engine to that torture.
Most of the time when it is cold around here I use the sump heater. Stays on most of the winter. I plug the inlets with a couple T shirts and cover the cowl up with a doubled over sleeping bag.
I can go to the hangar when it is 20° and pull the inlet plugs and the entire area inside the cowl is nice and toasty warm. Oil temp is usually 85-90° on startup.
I think the key to keeping condensation out of your engine when using a sump heater is to keep the "entire engine" warm all the time and to fly frequently. The blanket and inlet plugs allow me to do this in this climate.
Last edited by Brantel : 02-09-2012 at 09:32 AM.
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02-09-2012, 09:30 AM
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Join Date: Sep 2008
Location: Ely, Nevada
Posts: 222
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Oil, CHT, smooth
Following the guidance from superior and general literature, I expect:
75 degrees oil temp,
CHT of 150+ (some say 125),
oil pressure in the green,
and smooth acceleration to run up RPM.
In my cold weather experience, by the time I get 75 degree oil, the other items are satisfied.
__________________
Mike Coster
BUILDER: N92MB RV7A (A/W 3/2009) - Sold
ADOPTED/reworked: N4032Q RV8A (8/2017)
Building: S-21 Outback/Titan, tail and cockpit mated (3/2020)
KELY/Ely, NV
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02-09-2012, 09:32 AM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,243
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Lots of different opinions can be expressed, but I agree with David's study of the manufacturer's data. I am generally comfortable at 75 degrees, as I know that the gauge is well off the peg and I can trust that it hasn't just flipped a bit.
Paul
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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02-09-2012, 04:02 PM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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Quote:
Originally Posted by DEWATSON
Oil at room temperature (75 degrees) flows well enought to lubricate the engine. I always wait until I reach at least 75 degrees before a get the engine RPMs above 1000.
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Lycoming recommends not idling below 1000 rpms on start up. In fact, they dont recommend continuous idling below 1000 rpms at anytime.
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Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
Last edited by JonJay : 02-09-2012 at 04:12 PM.
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