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mj(at)yakuk.com
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 Posted: Fri Feb 09, 2007 12:31 am Post subject: oil dilution |
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Sure oil dilution is used. 2 reasons.
1. It just depends upon the ambient temperature you expect at next start up.
If its going to be below 5'c you should use it. Assuming 100 oil is in
engine.
If you don't use - expect to see oil pressure rise to normal on start up for
20 seconds then watch it drop to zero as the pump cavitates due to oil being
thick and cant get sucked through the filters and system. - DO NOT USE OIL
DILTION AT THIS STAGE !!!
80 grade oil is OK down to 0'c
2. The oil cooler can restrict flow back to the tank and bulge then split in
extreme temperatures.
Picture shows how to preheat an engine if you don't use oil dilution however
"JR" prefers to heat the engine even when oil dilution option is available.
I'm not sure how low temperature oil dilution is good for but seams to be ok
down to -10'c
http://www.yakuk.com/downloads.asp
CHEERS, MJ
Time: 10:55:01 AM PST US
From: "A. Dennis Savarese" <dsavarese(at)elmore.rr.com>
Subject: Re: Oil dilution system on M-14P
No one that I know in the Yak community uses the oil dilution system.
Dennis
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drc(at)wscare.com
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| Posted: Fri Feb 09, 2007 6:46 am Post subject: oil dilution |
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I know the east coast guys fly more in the winter - we have not been
much above 0 F or -17C (as low as -30C) for a while now.
Just curious how people are preheating. Is it something homemade, do
you use something manufactured? Do you use the stacks or the front
of the engine or the cowl flaps.
We have the EZ heat pads on the sump and the oil tank. It does ok
but the cylinders are not affected and I don't like to just sit all
winter. I generally do not fly if it is below about 20F.
Herb
On Feb 9, 2007, at 2:30 AM, Mark Jefferies YAK UK wrote:
| Quote: | Sure oil dilution is used. 2 reasons.
1. It just depends upon the ambient temperature you expect at next
start up.
If its going to be below 5'c you should use it. Assuming 100 oil is in
engine.
If you don't use - expect to see oil pressure rise to normal on
start up for
20 seconds then watch it drop to zero as the pump cavitates due to
oil being
thick and cant get sucked through the filters and system. - DO NOT
USE OIL
DILTION AT THIS STAGE !!!
80 grade oil is OK down to 0'c
2. The oil cooler can restrict flow back to the tank and bulge then
split in
extreme temperatures.
Picture shows how to preheat an engine if you don't use oil
dilution however
"JR" prefers to heat the engine even when oil dilution option is
available.
I'm not sure how low temperature oil dilution is good for but seams
to be ok
down to -10'c
http://www.yakuk.com/downloads.asp
CHEERS, MJ
Time: 10:55:01 AM PST US
From: "A. Dennis Savarese" <dsavarese(at)elmore.rr.com>
Subject: Re: Oil dilution system on M-14P
No one that I know in the Yak community uses the oil dilution system.
Dennis
<heating_g-bzjb.jpg>
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ReadeG(at)Cairnwood.com
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| Posted: Fri Feb 09, 2007 7:22 am Post subject: oil dilution |
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Herb:
I use a small propane heater/blower with a 4" flex aluminum pipe and 90
elbow and heat the engine from the rear. I alternate between engine and oil
cooler for 20 minutes or so. This is in conjunction with oil tank heating
pad. One prime for every 10 degrees below 70F while flipping the prop and
it starts just fine. I have never used the dilution system although I
probably should have tried it one cold morning in Winnemucca, NV.....
Also - I need to talk to you about some Wilga parts. Can you send me your
phone number off list - reade(at)genzlinger.net
Thanks,
Reade
[quote] --
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rvfltd(at)televar.com
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| Posted: Fri Feb 09, 2007 9:24 am Post subject: oil dilution |
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Herb and guys,
In my opinion the ultimate answer is to have a heated hanger but not all
of us can afford that so the next best option one is to always preheat
both the engine and the oil cooler with a engine pre heater such as a
Red Dragon, Herman Nelson, South Wind etc.,etc. The next best thing is
to use the combination of a fitted insulated cowl blanket and some type
of heat pad (on the oil tank), this will go a long way to solving the
problem in an unheated hanger. But without something to hold the heat
inside the cowl your are pretty much fighting a uphill battle. I
learned the benefits of cowl blankets in Alaska, I took a insulated cowl
blanket and attached a 110 volt household heat pad to the lower inside
surface of the cowl blanket with Velcro, pulled it over the cowl and it
worked wonders.
Richard is correct,don't forget the oil cooler put a EZ heat pad there
also. I have seen cold oil coolers split open like over ripe watermelons!
One last caution, don't over prime. Over priming can wash the oil from
the cly walls which will result in heavy wear in that jug. Check your
manual on this point, it is very clear about this point.
If you want a fitted cowl blanket, give me a call or a email off list, I
still have 3-4 left in stock.
Always Yakin,
Doug
Herb Coussons wrote:
| Quote: |
I know the east coast guys fly more in the winter - we have not been
much above 0 F or -17C (as low as -30C) for a while now.
Just curious how people are preheating. Is it something homemade, do
you use something manufactured? Do you use the stacks or the front
of the engine or the cowl flaps.
We have the EZ heat pads on the sump and the oil tank. It does ok
but the cylinders are not affected and I don't like to just sit all
winter. I generally do not fly if it is below about 20F.
Herb
On Feb 9, 2007, at 2:30 AM, Mark Jefferies YAK UK wrote:
> Sure oil dilution is used. 2 reasons.
>
> 1. It just depends upon the ambient temperature you expect at next
> start up.
> If its going to be below 5'c you should use it. Assuming 100 oil is in
> engine.
>
> If you don't use - expect to see oil pressure rise to normal on
> start up for
> 20 seconds then watch it drop to zero as the pump cavitates due to
> oil being
> thick and cant get sucked through the filters and system. - DO NOT
> USE OIL
> DILTION AT THIS STAGE !!!
>
> 80 grade oil is OK down to 0'c
>
> 2. The oil cooler can restrict flow back to the tank and bulge then
> split in
> extreme temperatures.
>
> Picture shows how to preheat an engine if you don't use oil dilution
> however
> "JR" prefers to heat the engine even when oil dilution option is
> available.
> I'm not sure how low temperature oil dilution is good for but seams
> to be ok
> down to -10'c
>
> http://www.yakuk.com/downloads.asp
>
> CHEERS, MJ
>
> Time: 10:55:01 AM PST US
>
> From: "A. Dennis Savarese" <dsavarese(at)elmore.rr.com>
>
> Subject: Re: Oil dilution system on M-14P
>
> No one that I know in the Yak community uses the oil dilution system.
>
> Dennis
>
> <heating_g-bzjb.jpg>
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cjpilot710(at)aol.com
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fougapilot(at)hotmail.com
Guest
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| Posted: Fri Feb 09, 2007 11:34 am Post subject: oil dilution |
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Although I have never done it myself, removin the oil from the engine and
keeping it indoors during those long winter night is (was) a comon pactice
in Canadian aviation. Back in a previous life, I use to fly a Piper Cheyenne
in northern Canada and we regularly removed the battery from the airplane
when she had to sleep outside.
D
[quote]From: cjpilot710(at)aol.com
Reply-To: yak-list(at)matronics.com
To: yak-list(at)matronics.com
Subject: Re: oil dilution
Date: Fri, 09 Feb 2007 14:16:23 -0500
I once read an account of the early days of Alaska aviation, where pilots
would drain the still warm engine oil into a bucket after shut down. When
the time came they had to fly they would heat the bucket of oil over a camp
fire or camp stove just before starting. Maybe you could use those gas
grills that get set aside during the winter months. Should cause no small
concern to the local airport Nazis. 
At BCT with the bomber right now. Wx is just plain beautiful. Sct to Bkn
Cu at 3,000 with temp at 75F and a light wind just off the beach. We'll be
flying a ride this after noon and one in the morning. Will take the planes
back to EVB on Sunday for some maintenance pior to them starting the
national tour.
Jim "Pappy" Goolsby
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CJcanuck
Joined: 05 Jul 2006
Posts: 39
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| Posted: Fri Feb 09, 2007 12:49 pm Post subject: Re: oil dilution |
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A danger of using the Red Dragon units is not allowing the heat to soak into the oil long enough. Heat a can of oil on a stove until it's too hot to touch and you will probably still have a lump of solid oil in the middle. From my days in G.A. here in the Great White North we always needed a minimum of 30 minutes with the blower playing directly onto the oil pan of an IO-520 for it to be truly effective. A big motor like the Housai (or M-14) might be longer with it's large oil tank.
Any suggestions for a make or model of electric fan heater that I could use on the oil cooler? I already have one of Doug's engine blankets with the E-Zheat pads but would like to play nice with the cooler as well.
Mike
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