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RobHickman(at)aol.com
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 Posted: Tue Sep 02, 2008 8:50 am Post subject: IO-540 Oil Pressure with 20-50 Exxon Elite |
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I changed the oil in the RV-10 on Saturday and decided that since it now has over 75 hours on it (in 6 weeks) I would change to the same oil I have been using in the RV-4 for years; multi weight 20-50 Exxon Elite. I had been using Aero Shell 100 (50 weight) and after changing to the Exxon 20/50 oil my oil pressures increased about 10 PSI in flight and 5-10 psi at idle when hot. I am currently getting 80 psi at 185F in flight and 43 psi at 190F and 675 RPM on the ground. The oil pressure on takeoff when the oil is cold has also dropped with the new oil.
I plan on adjusting the pressure back to 70-75 PSI the next time I have the top cowl off.
Rob Hickman
N402RH RV-10
It's only a deal if it's where you want to go. Find your travel deal here.
[quote][b]
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Geico266
Joined: 13 Jun 2008
Posts: 18
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| Posted: Tue Sep 02, 2008 9:03 am Post subject: Re: IO-540 Oil Pressure with 20-50 Exxon Elite |
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I think your oil pressure numbers are right where they should be.
JMHO
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Tue Sep 02, 2008 9:03 am Post subject: IO-540 Oil Pressure with 20-50 Exxon Elite |
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Probably better to leave it alone. Cessna now uses something like 95
or 100 psi from a spot further down the line, so really closer to 115
psi at normal pickoff. Improves upper cylinder lube, rocker arms and
valve stems. Unless you are having any issues with leakage, I wouldn't
change your pressure setting.
Kelly
A&P/IA
On 9/2/08, RobHickman(at)aol.com <RobHickman(at)aol.com> wrote:
| Quote: |
I changed the oil in the RV-10 on Saturday and decided that since it now has
over 75 hours on it (in 6 weeks) I would change to the same oil I have been
using in the RV-4 for years; multi weight 20-50 Exxon Elite. I had been
using Aero Shell 100 (50 weight) and after changing to the Exxon 20/50 oil
my oil pressures increased about 10 PSI in flight and 5-10 psi at idle when
hot. I am currently getting 80 psi at 185F in flight and 43 psi at 190F and
675 RPM on the ground. The oil pressure on takeoff when the oil is cold has
also dropped with the new oil.
I plan on adjusting the pressure back to 70-75 PSI the next time I have the
top cowl off.
Rob Hickman
N402RH RV-10
________________________________
It's only a deal if it's where you want to go. Find your travel deal here.
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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Kelly McMullen
A&P/IA, EAA Tech Counselor
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