Today's Message Index:
----------------------
1. 05:46 AM - Re: Superior Vantage engine (Gary Casey)
2. 06:04 AM - Re: Re: Superior Vantage engine (Archie)
3. 07:04 AM - Re: Superior Vantage engine (Speedy11@aol.com)
4. 07:33 AM - A Slippery Subject (Gene Smith)
5. 08:07 AM - ENGINE OIL (WRBYARS@aol.com)
6. 10:21 AM - Re: Re: Superior Vantage engine (Joe Bienkowski)
Message 1
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| Subject: | RE: Superior Vantage engine |
--> Engines-List message posted by: "Gary Casey" <glcasey@adelphia.net>
Regarding "aircraft" oil compared to "automotive" oil someone who should
know told me this about it: Unless you're talking about straight mineral
oil, both are "dispersant" types, meaning they have detergents to keep dirt
in suspension so it can be drained out. The difference is in the other
designation - aircraft oils are termed "ashless", which means that the
additives are formulated to burn without generating ash. Ash, when burned
will deposit out in the combustion chamber, including on the spark plug, and
potentially cause pre-ignition. It is important that engines that burn a
significant amount of oil be ashless to prevent this problem. Since most
automotive engines burn very little oil an ashless property is of no use.
However, all big-bore aircraft engines burn significant oil and this gives
rise to the need for an ashless oil. Otherwise, oil is oil, so I was told.
At Mercury Marine when we were testing the first Chevy 502's they burned so
much oil that we couldn't get more than a few hours on one before it would
self-destruct from pre-ignition. We switched to ashless oil for the testing
until GM came up with the right ring combination and it worked. For what
it's worth I would run standard aircraft oil when burning lead-free
automotive fuel, although I have no personal experience doing so.
Gary Casey
Message 2
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| Subject: | Re: RE: Superior Vantage engine |
--> Engines-List message posted by: "Archie" <archie97@earthlink.net>
You hit the nail on the head, Gary.
By stopping the original culprit, there is no need for expensive
aircraft engine oil, and less frequency between changes,
not to mention not having to add in between.
We have been watching one of my engines carefully, and in 713 hours,
has consumed a bit less than 28 quarts.
Experiments continue............................
Archie Frangoudis
Archie's Racing Service
----- Original Message -----
From: "Gary Casey" <glcasey@adelphia.net>
Subject: Engines-List: RE: Superior Vantage engine
> --> Engines-List message posted by: "Gary Casey" <glcasey@adelphia.net>
>
> Regarding "aircraft" oil compared to "automotive" oil someone who should
> know told me this about it: Unless you're talking about straight mineral
> oil, both are "dispersant" types, meaning they have detergents to keep
> dirt
> in suspension so it can be drained out. The difference is in the other
> designation - aircraft oils are termed "ashless", which means that the
> additives are formulated to burn without generating ash. Ash, when burned
> will deposit out in the combustion chamber, including on the spark plug,
> and
> potentially cause pre-ignition. It is important that engines that burn a
> significant amount of oil be ashless to prevent this problem. Since most
> automotive engines burn very little oil an ashless property is of no use.
> However, all big-bore aircraft engines burn significant oil and this gives
> rise to the need for an ashless oil. Otherwise, oil is oil, so I was
> told.
> At Mercury Marine when we were testing the first Chevy 502's they burned
> so
> much oil that we couldn't get more than a few hours on one before it would
> self-destruct from pre-ignition. We switched to ashless oil for the
> testing
> until GM came up with the right ring combination and it worked. For what
> it's worth I would run standard aircraft oil when burning lead-free
> automotive fuel, although I have no personal experience doing so.
>
> Gary Casey
Message 3
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| Subject: | Re: Superior Vantage engine |
--> Engines-List message posted by: Speedy11@aol.com
Regarding oils, is there anyone on the list who knows about synthetic oils.
I would like to use synthetic oil in my new engine, but I have no information
about it. Where can I research aviation synthetic oil? Does it exist? Can
automobile synthetic oil be used?
Stan Sutterfield
www.RV-8A.net
Tampa, FL
In a message dated 10/13/2004 2:58:20 AM Eastern Standard Time,
engines-list-digest@matronics.com writes:
Another bit of information he passed on was that the formulation of
aviation oils and the use of auto gas was a problem area. The additives
in aviation oil are not necessarily compatible with the additives in car
gas and that the by-products created by burning the car gas would break
down the aviation oil before the recommended 25 hour oil change
intervals. He didn't go so far as to recommend using auto oils in
airplane engines burning auto gas (did I mention he worked for
AeroShell?!), but I doubt there is much risk in doing that considering
the high performance, high heat, high rpm engines in cars these days -
the oil they use is likely durable enough to withstand aircraft engine
stresses (primarily talking about Lyc's and Conty's - not necessarily
auto engine conversions).
Message 4
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| Subject: | A Slippery Subject |
--> Engines-List message posted by: "Gene Smith" <esmith6@satx.rr.com>
Hey gang...............There is a good article on oil in the October 2004 issue
of EAA Sport Pilot & Light Sport Aircraft magazine on pages 45-47...It basically
is info for the 4 cycle Rotax 912 & 914, but applies to most engines...It
covers the fuel situation with specific oils and 100LL and mogas...It also addresses
the temperature situation with respect to best viscosity and multi-grade
oils.
I think this article will answer most of your questions I have seen recently...Be
careful out there, and good luck................CHEERS!!!!.....................Gene
Smith.
Message 5
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--> Engines-List message posted by: WRBYARS@aol.com
Ever since I've had airplanes, (about 40 years now), I've used Aero Shell
oil of some type, however for some time now I've been seeing more advertising,
reading articles and hearing folks talk about "CASTROL" oil. I've used this
brand in my cars and trucks for years with very good results, but never in an
aircraft engine.
Please give me input on the use of CASTROL, as opposed to AERO SHELL,
PHILLIPS, etc. for my Lycoming 0290-D.
Thanks
Bill
Message 6
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| Subject: | Re: Superior Vantage engine |
--> Engines-List message posted by: "Joe Bienkowski" <jbienkowski@mindspring.com>
Stan,
Synthetic oil can successfully used in an aircraft engine that uses ONLY
unleaded fuel!
I did this in a Lycoming O-320 with good results. I used the standard Mobil
1 and was impressed how the oil temperature did run slightly cooler, but to
me the big advantage is that the oil held pressure better, that is it did
not lose as much viscosity as Aero Shell 20w50 in hot summer weather when I
was really calling for high output from my engine. This was most apparent
on evening when I ran from NW Ohio to Oshkosh, WOT the entire trip in order
to make the 8:30 pm field closing time.
I was using Autolite platinum fine wire plugs at the time and never did have
any issues with spark plug fouling.
Having said this. PLEASE remember that if you use any 100LL in your engine,
there will be lead pushed into the crankcase and synthetic oil will NOT keep
the lead in suspension. Instead you will find the lead depositing in all
the wrong places. Mobil did purchase a number of engines, mostly
continental, as I recall, when the lead deposits finally caused oil
starvation and eventual engine failure!
As always, YMMV
Best,
Joe
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of
Speedy11@aol.com
Subject: Engines-List: Re: Superior Vantage engine
--> Engines-List message posted by: Speedy11@aol.com
Regarding oils, is there anyone on the list who knows about synthetic oils.
I would like to use synthetic oil in my new engine, but I have no
information
about it. Where can I research aviation synthetic oil? Does it exist? Can
automobile synthetic oil be used?
Stan Sutterfield
www.RV-8A.net
Tampa, FL
In a message dated 10/13/2004 2:58:20 AM Eastern Standard Time,
engines-list-digest@matronics.com writes:
Another bit of information he passed on was that the formulation of
aviation oils and the use of auto gas was a problem area. The additives
in aviation oil are not necessarily compatible with the additives in car
gas and that the by-products created by burning the car gas would break
down the aviation oil before the recommended 25 hour oil change
intervals. He didn't go so far as to recommend using auto oils in
airplane engines burning auto gas (did I mention he worked for
AeroShell?!), but I doubt there is much risk in doing that considering
the high performance, high heat, high rpm engines in cars these days -
the oil they use is likely durable enough to withstand aircraft engine
stresses (primarily talking about Lyc's and Conty's - not necessarily
auto engine conversions).
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