AMSOIL

AMSOIL

I've been using AMSOIL 100% synthetic oil in my vehicles for years.  They have been great in every aspect of fuel efficience, lubrication and extended use categories.  AMSOIL doesn't break down with heat like petroleum based oils, it retains its lubricicity after extended use, it increases fuel mileage due to better lubrication. 
I asked my distributor about it for avaition use, and he advised that many people, and he named several in the high performance area as well as general aviation areas that are currently using AMSOIL (20W-50).
While at an air show recently, I noticed that several of the planes on display had AMSOIL stickers on the fuselage, and I asked the owners, who also raved about the result of using AMSOIL.
Have any of you had any experience with it?

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Re: AMSOIL

> I asked my distributor about it for avaition use, and he
> advised that many people, and he named several in the high
> performance area as well as general aviation areas that are
> currently using AMSOIL (20W-50).

Is it approved for use in aircraft?
If not, you are becoming a test pilot,
your C of A is almost certainly cancelled,
which probably also means that your insurance is cancelled.

Tony
C-GICE

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Re: AMSOIL

I think AMSOIL was approved at one time...dunno if it still is.
You'll hear 'stories" like.  I drove my pickup 452,000 miles
before I had to replace my engine.  sounds pretty good.
I don't think you'll ever hear someone saying "I flew my
plane 9,600 hrs since OVH and the compression is still
in the high 70's.
My 0-470-R went 1900 hrs on it's first run using 100 (SAE 50)
No oil filter.  the shop that did the OVH said, something to the
effect of "Too bad we had to tear it apart to fine out what good
shape the engine's in" 
I had the OVH done only because my stomach was starting to
tie into knots because I was 400 over TBO. 
I don't see how an oil filter or Synthetic oil or any additives
would have made any improvement on that engine.
I'm certinaly not saying that there aren't superior lubricants
to what I used, nor would say not to use an oil filter...I did put one on  shortly after the OVH...."just cuz"
Back to the AMSOIL...I've ran across several users....never met one that wasn't a distributor.  Of course, you will only hear GOOD STUFF about it...they sell it.
I'm sure it's a quality product, it's been around for 1/2 century...I just haven' been convinced it's worth the extra $$.
The above is only my personal opinion based on my own experiences..
Happy flying!!
Michael
I

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Re: AMSOIL

I wasn't by any means suggesting to extend the TBO time, or oil change duration,only inquiring about the experience of anyone using AMSOIL.  Since I am familiar with its superior lubrication qualities, I figured that it could only help to reduce engine wear during the TBO time, and eliminate the build up of glazing, ash, and sludge.
And as far as the "extra money" factor, it would be negligible compared to the cost of repairs due to engine failure from lubrication.
Again, just wondering if anyone had experience with it, not hearsay.
Will

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Re: AMSOIL

I would not do it.  I doubt it that there is any ashless dispersant it Amsoil to avoid the build up of metallic ash residues on critical engine components.  There are a new league of engines being developed by Bombardier and Honda/Teledyne that supposidly will use automotive oil and spark plugs.  Amsoil is a good product but who the heck wants to leave oil in your car for 30k miles???  You void warrantees etc.  I would be nervouse as a cat in a dog pound doing that to my car.  Putting it in my airplane is not optional.  Aeroshell W100 in time tested and best against heat and corrosion for my 0470-R - it is kinda sticky which is what you want for an aircraft because they freqeuntly sit for days, weeks and god forbid months without running.  Aeroshell really keep crankcase corrosion at bay by sticking to the inside of the engine.  Next time you get some just feel it.  I do have my oil filtered but am not sure it is very useful really.  I mean you are supposed to drain it every 25 hrs on an unfiltered engine - not much time really to get that dirty.  I like oil topics.  What kind of tires are most using?  I'm getting close on Tires.

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Re: AMSOIL

As I mentioned, I have been using it in my vehicles for years.  I drive 60K+ per yr. for a living, and have used the 35K mile oil from AMSOIL.  It is used with a super duty filter that is changed at 12.5K, and when I've drained the oil at about 35K, it is as slick as new oil, and looks like oil that is only about 5K old due to the use of the AMSOIL super duty filters.
But, I already know the advantage of using it in automotive, I was looking for reports of aviation use.
I'v experienced the doubting of extended use synthetic oils for years, especially from those who make their living selling oils or oil changes, like lube shops, and auto dealerships, but I know the results.  I have over 347,000 miles on my Blazer today, and have recently had the enging checked, with all data within specs.
Again, I'm just looking for results, not a debate over synthetic's advantages.

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Re: AMSOIL

> Again, I'm just looking for results, not a debate over
> synthetic's advantages.

None of us were debating synthetics advantages - we were asking if it was certified for use in aircraft - and you still have not answered that question.

Tony

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Re: AMSOIL

One thing to keep in mind is that AMSOIL is a synthetic oil.  Regardless of make, synthetic oils as a group have proven to be unable to hold lead in suspension, which is something that good old dino juice happens to be very good at.  That's one of the most important reasons that Shell (and others) only offer aviation oils that are either fully dino juice or semi-synthetic.  I suspect that using AMSOIL in an aviation engine will just prove to be a repeat of the Mobil AV1 debacle.

Best Regards,
Dale

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Re: AMSOIL

As I have learned, AMSOIL produced a product called AVOIL about 20 yrs. ago.  It was certified for aviation use.  Then, when the insurance crunch hit, the cost to continue was prohibitive, and they stopped marketing AVOIL.  Many experimentals are using AMSOIL 10W40 and 20W50, with great results, but it is not FAA certified for gen. aviation engines at this time.

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Re: AMSOIL

At the risk of repeating myself, AMSOIL is highly unlikely (read, "It ain't gonna happen") to be certified for certified GA aircraft until 100LL is a thing of the past.  That experimentals use it is of no relevance as many (the vast majority?) use unleaded mogas for fuel.  Anybody who operates an aircraft with leaded fuel and fully synthetic oil in the engine is either very ignorant of the facts or has a death wish.

That said, the following is snippet from the AeroShell FAQ page:
http://www.shell.com/home/Framework?sit … tions.html

"Will the synthetic portion of semi-synthetic AeroShell® Oil W 15W-50 harm an aircraft engine?

A number of pilots have asked this question.  The answer is a definite no.  When Shell first started evaluating multigrade aviation piston-engine oils over 25 years ago, testing proved that multigrades formulated only with mineral base oils did not have adequate base oil viscosity (thickness) to properly lubricate all high load points in the engine.  Then we tested and flight evaluated a formulation made with all-synthetic base oils.  This formulation had excellent antiwear characteristics in all tests run.  However, in the flight evaluations, some engines would reach 600 to 900 hours, then lose oil consumption control and/or compression.  When the engines were disassembled, we found that the piston rings were covered with a gray tacky substance that was primarily made up of the lead by-products of combustion (from the use of leaded aviation gasoline).  Although synthetics are excellent lubricants with good high temperature stability and very good low temperature flow characteristics, they are relatively poor solvents.

In an aircraft engine, the lead by-products of combustion must be dissolved by the base oil so they can be carried away from the ring belt area and removed from the engine when the oil is changed.  Anticorrosion, antiwear AeroShell┬« Oil W 15W-50 is formulated with 50% synthetic base oils to give it the excellent low temperature flow needed for quick lubrication during cold starting.  The synthetic base oils, along with the unique antiwear additive system, give it antiwear protection unequaled by any other product on the market.  In addition, its mineral base oils provide lead absorbency to guard against ring sticking and excessive sludge.  The bottom line: The synthetic component of AeroShell Oil W 15W-50 will not harm your engine.  Instead, it gives you the best of both oils."

Best Regards,
Dale

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Re: AMSOIL

    If you really want an treatment that will produce more power, improve engine smoothness on your airplane, use Microlon, it is approved for use is all Aircraft Engines.   Dont have to worry about your Warrantees or Insurance.  ........Ron.......

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Re: AMSOIL

By the way I tried the new Exxon Elite synthetic when it came out.  Its a multigrade oil 10/50. I had immediate oil temp overheating and up to the point that I lost prop pitch control.  I drained and the Exxon Elite and replaced with the good ol Aeroshell W100 and temps went right back to 165.  Cant really explain it but I would not use that crap again unless maybe if I were running a four cylinder engine.  Big bore continentals do not like multigrade or synthetic oil.  Aeroshell W100 is the good stuff for bigger engines in my experience.

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Re: AMSOIL

By the way I tried the new Exxon Elite synthetic when it came out.  Its a multigrade oil 10/50. I had immediate oil temp overheating and up to the point that I lost prop pitch control.  I drained and the Exxon Elite and replaced with the good ol Aeroshell W100 and temps went right back to 165.  Cant really explain it but I would not use that crap again unless maybe if I were running a four cylinder engine.  Big bore continentals do not like multigrade or synthetic oil.  Aeroshell W100 is the good stuff for bigger engines in my experience.

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Re: AMSOIL

If you are using something that works great I would not change. You can buy Aeroshell 100 at SAM'S for less than $23 per case and you can change it every 25 to 30 hours, even if you have a filter. That is cheap compaered to overhaul do to poor oil quality problems.

Bill

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Re: AMSOIL

That also is a compelling reason.  At any rate, don't put Amsoil in your airplane.

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Re: AMSOIL

All I can say is......AMS Oil, like most all synthetics, are great for their intended purpose.  However, since they are much thinner than conventional oils, they can be problematic.   If you have a constant speed prop, the oil is thin enough to leak past some of the seals.

Also, if your engine uses a little oil, and most aircraft engines do, expect your oil consumption to increase.

I run synthetic oil in my cars and even my lawnmower, but I would stick to Aeroshell for my bird!

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Re: AMSOIL

OK, got the hint and advise.

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