Let's start a rumor that Amsoil turns into diamond chips when overheated. Diamonds are made from 100% carbon, and there's plenty of carbon in Amsoil.

Seriously though, I have read on the web about a landscaping business owner that switched all his 2-strokes to Amsoil 100:1. His claim was that the engines failed prematurely compared to the service life for this equipment run on a different oil (with a richer ratio). The engines were loaded with some very hard substance, glass-like deposits. I'll find a link if I can to his story.

Here it is:

Message 25 in thread
From: James ([email protected])
Subject: Re: Amsoil in Zenoah engines


View this article only
Newsgroups: rec.models.rc.air
Date: 2002-09-26 16:28:38 PST


"Me" <[email protected]> wrote in message
news:[email protected] ews.com...
> Any issues on using Amsoil, at 100 to 1 in Zenoah engines (G-45) ? Anyone
> had any problems?
> Thanks
> Bill
>
Every time I look at this thread I say to myself, should I say
something or just keep my mouth shut? I can't stand it any longer.
I am going to tell you guys my experience with Amsoil. First let me
give you some background. I have the responsibility for the up keep
of 153 acres of grounds that is open to the public year round. I have
a crew of 7 men that do nothing but cut grass for nine months out of
the year. All of our weed eaters, our hedge trimmers and 5 of our
lawn mowers are 2 cycle. The rest of the lawn mowers are 4 cycle.
They don't make 2 cycle push mowers any more but as long as I can get
parts to overhaul them, we will keep running them. Understand that we
will put more hours on a weed eater in one grass season than the
average home owner will put on one in a lifetime. Because of this
most of our 2 cycle engines get overhauled at the end of each grass
season in November.

I am a firm believer in Synthetic motor oil. All of our 4 cycle
engines have Mobil 1 Synthetic oil in them. I am such a believer in
Synthetic oil (Mobil 1) I wanted to try Synthetic 2 cycle oil. So 3
years ago I started off a new season using 2 cycle Amsoil (100 -1
mix). The engines ran great. Then about mid-season I started having
a lot of engine failures, due to scored pistons and cylinder walls. I
have had scored cylinders before but never like this. I was losing an
engine every week. I noticed that the carbon deposits on top of the
pistons were different. There was less carbon but what carbon was
there was very small beads that was as hard as glass.

I mentioned this problem to my parts supplier one day when I was
picking up parts. He said, "You use Amsoil right?". I said yes. He
said, that is your problem. He said Amsoil will not burn. He said
that it forms very hard particles that get between the piston and
cylinder that score the piston. He said if you don't believe me try
to burn some Amsoil. He said, "I tried to set it on fire with a
propane torch."

I so much did not want to believe him. As soon as I got back to the
shop I poured some Amsoil in a metal pan. I lit my Oxygen - Acetylene
cutting torch that I can cut 2 inch steel with. Let me tell you
folks, "You can't burn Amsoil in Hell with the blowers turned on."
Amsoil will not burn. It does form very hard particles on top of the
piston. I stopped using Amsoil and went back to Havoline TC-W3. I
have not had a single scored piston problem since.

If you are using Amsoil I sincerely wish you the best of luck with it.
I will never use Amsoil again.