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Oil temps

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civengpe

Joined: 14 Feb 2011
Posts: 105

Posted: Tue Jun 14, 2016 6:02 am Post subject: Oil temps

The other thread talking about cowl flaps got me rethinking another kind of cooling issue that I am having. I can't get my oil temps to climb above 140. It doesn't matter how hot it is outside or how long I climb, they top out right at 140. Could this be caused by me having a plenum and having too much air flow through the oil cooler?Â  The probe registers ambient temperature correctly when not running, so it seems to be accurate in that regard. Can a faulty vernatherm cause this?



Any ideas?

Thanks,

Shannon

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partner14

Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas

Posted: Tue Jun 14, 2016 6:27 am Post subject: Oil temps

I wouldn't believe the 140.





Sent via the Samsung Galaxy SÂ® 6, an AT&T 4G LTE smartphone



-------- Original message --------

From: Shannon Hicks <civeng123(at)gmail.com> 

Date: 6/14/16  7:02 AM  (GMT-07:00) 

To: rv10-list(at)matronics.com 

Subject: RV10-List: Oil temps 



The other thread talking about cowl flaps got me rethinking another kind of cooling issue that I am having. I can't get my oil temps to climb above 140. It doesn't matter how hot it is outside or how long I climb, they top out right at 140. Could this be caused by me having a plenum and having too much air flow through the oil cooler?  The probe registers ambient temperature correctly when not running, so it seems to be accurate in that regard. Can a faulty vernatherm cause this?



Any ideas?

Thanks,

Shannon

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_________________
Don A. McDonald
40636

jesse(at)saintaviation.co
Guest

Posted: Tue Jun 14, 2016 6:32 am Post subject: Oil temps

Run it into a pot of boiling water and see what it reads. First thing is to verify the probe is working correctly. 



Jesse Saint

Saint Aviation, Inc.

352-427-0285

jesse(at)saintaviation.com



Sent from my iPad



 	  Quote: 	
		   On Jun 14, 2016, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com> wrote:

 

 The other thread talking about cowl flaps got me rethinking another kind of cooling issue that I am having. I can't get my oil temps to climb above 140. It doesn't matter how hot it is outside or how long I climb, they top out right at 140. Could this be caused by me having a plenum and having too much air flow through the oil cooler?  The probe registers ambient temperature correctly when not running, so it seems to be accurate in that regard. Can a faulty vernatherm cause this?

 

 Any ideas?

 

 Thanks,

 Shannon

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Mauledriver(at)nc.rr.com
Guest

Posted: Tue Jun 14, 2016 7:41 am Post subject: Oil temps

In non-summer conditions I had the same problem - just couldn't get the 

oil temp up to the minimum.



It seems that the combination of running less oil (6-7 quarts) and 

blocking some of the airflow to the cooler with a plate installed in the 

engine shroud fixed it.  I don't recall ever changing the oil temp probe.



No change is required for NC/FL summers but I do reduce the size of the 

blocking if I remember and run another quart of oil in summer.



Bill "found the stock setup to run very cool except for the tunnel" Watson



On 6/14/2016 10:02 AM, Shannon Hicks wrote:

 	  Quote: 	
		   The other thread talking about cowl flaps got me rethinking another 

 kind of cooling issue that I am having. I can't get my oil temps to 

 climb above 140. It doesn't matter how hot it is outside or how long I 

 climb, they top out right at 140. Could this be caused by me having a 

 plenum and having too much air flow through the oil cooler?  The probe 

 registers ambient temperature correctly when not running, so it seems 

 to be accurate in that regard. Can a faulty vernatherm cause this?



 Any ideas?



 Thanks,

 Shannon

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Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Tue Jun 14, 2016 12:39 pm Post subject: Oil temps

I added another opening on each side to improve oil cooling. I also have an additional oil cooler. Seems to be good enough now for Yuma's hot, hot weather.

Albert Gardner

RV-10 N991RV

Yuma, AZ

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