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  #1  
Old 10-14-2020, 04:05 PM
Pilot8 Pilot8 is offline
 
Join Date: Sep 2018
Location: California
Posts: 64
Default Oil weights in the midwest

My RV8 lives in warm sunny California, so I can't advise my Iowa based brother on what weight oil to use in his newly purchased RV7A. He bought the RV7A this year from a guy in Seattle, so no joy on using the previous owner's choices. For you guys in the midwest: what weights do you use throughout the year?
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Last edited by Pilot8 : 10-14-2020 at 04:09 PM.
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  #2  
Old 10-14-2020, 05:36 PM
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RV6_flyer RV6_flyer is offline
 
Join Date: Jan 2005
Location: NC25
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Quote:
Originally Posted by Pilot8 View Post
My RV8 lives in warm sunny California, so I can't advise my Iowa based brother on what weight oil to use in his newly purchased RV7A. He bought the RV7A this year from a guy in Seattle, so no joy on using the previous owner's choices. For you guys in the midwest: what weights do you use throughout the year?
I used multi-weight oil in my airplane for the past 23-years. I have been based SoCal, South Western Pennsylvania, and now North Carolina.

The Lycoming (or other aircraft engine) manual has the recommended oils listed for the different temperature ranges.
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  #3  
Old 10-14-2020, 06:14 PM
Pilot8 Pilot8 is offline
 
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Yup, got the list of oil weights in my POH. Looking for real world experience from people who fly in the midwest during the winter.
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RV8 fastback: 350 hours
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Last edited by Pilot8 : 10-14-2020 at 06:46 PM.
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  #4  
Old 10-14-2020, 07:17 PM
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D Weisgerber D Weisgerber is offline
 
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Location: Ionia Michigan
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I run Phillips XC 20-50 year round, I'm in Michigan. I do pre heat in the winter.
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  #5  
Old 10-14-2020, 09:18 PM
cross cross is offline
 
Join Date: Jan 2007
Location: Vernon, British Columbia,
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A straight weigh detergent oil probably gives a little better rust protection as it runs off at a slower rate. Multi-grades are fine but you should not leave your engine sit for weeks or months (you shouldn't do this anyway). I advocate pre-heating when temperatures are even close to freezing. I won't start until the oil will drip off the dipstick.
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  #6  
Old 10-14-2020, 09:36 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
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20W50 here

Larry
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  #7  
Old 10-14-2020, 09:39 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
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Quote:
Originally Posted by cross View Post
A straight weigh detergent oil probably gives a little better rust protection as it runs off at a slower rate. Multi-grades are fine but you should not leave your engine sit for weeks or months (you shouldn't do this anyway). I advocate pre-heating when temperatures are even close to freezing. I won't start until the oil will drip off the dipstick.
First, we don't use detergent oil in aviation; Only AD additive. Second, most straight weights are simply too thick (unless you can find an SAE 30 wt aviation oil anymore) for the 0 degree and lower temps this guy will see in Iowa.
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Last edited by lr172 : 10-14-2020 at 09:48 PM.
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  #8  
Old 10-14-2020, 11:04 PM
Pilot8 Pilot8 is offline
 
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Location: California
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Good to know- two guys who use 20W-50 year; that is what I was looking to find out, does it work year around. Do you add cam guard?
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  #9  
Old 10-15-2020, 05:03 AM
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plehrke plehrke is offline
 
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Location: Defiance, MO
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I use 15W50 here in STL year round. I preheat anytime temps are below 30F. I also fly at least an hour every week even in winter (love that extra performance). I use no aftermarket additives. All seems normal with engine wear now for near 1000 hours.
I recommend following Lycoming recommendations. Mine is based on limited experience.
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Last edited by plehrke : 10-15-2020 at 05:05 AM.
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  #10  
Old 10-15-2020, 06:38 AM
BillL BillL is offline
 
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Location: Central IL
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15W50 Aeroshell year around with Reiff Preheat and remote phone switch (no internet).
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