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Ah, yes, Mark, important point!
Since it is not mineral based, there is
less lowering of Octane rating of fuel mixture and therefore less likely hood of
detonation. This enables me to run those rare 20:1 compression ratio
rotors and produce over 300HP with my 13B. Couldn't do it without my
Super-Tech Wall-Mart Oil. But, don't tell anyone else my secret
{:>)
Ed
----- Original Message -----
Sent: Tuesday, April 01, 2008 2:06
PM
Subject: [FlyRotary] Re: Super-Tech was
[FlyRotary] Re: 2-stroke oil
Ed,
Interesting that it says it is synthetic based.
Mark
On 4/1/08, Ed
Anderson <eanderson@carolina.rr.com>
wrote:
Al, back some time ago when I was using some
very expensive 2 stroke oils (like over $4.00/quart) , I decided to do some
research. I came to the conclusion that the Marine 2 stroke oils were
probably as good as was needed for our Rotary application. Some
of the 2 stroke oils designed for air cooled engines apparently have
different formulations to cope with the higher temps associated. In
any case, I decided the Wall-Mart Marine 2 stroke Super-Tech which meets
TC-W3 standards(on the back label) (and much less costly) was more than
good enough.
I no longer can find the source, but this oil
was reportedly produced by PENNZOIL for Wall-Mart.
I have been using it for 4 years without any
problem.
FWIW
Ed
----- Original Message -----
Sent: Tuesday, April 01, 2008 12:48
PM
Subject: [FlyRotary] Re: 2-stroke
oil
For the premix oil I use any good BIA cert. TCW-3
2-stroke oil mixed 50-50 with MMO both of which come from
Walmart. Any of the Redline 2-stroke oils would be excellent,
including the snomobile stuff.
The only
2-stroke oil I could find at the local Walmart was called Super-Tech, and
I couldn't find any certifications on it anywhere. Is MMO proven for
this application? My research also indicates that the TCW-3 rating
only is not recommended for watercraft (water-cooled engines), where the
NMMA rating is required. So do we best get the stuff for air-cooled
2-stroke – which probably run hotter; the stuff for watercraft – which
probably run cooler; or something else (other than Redline). Or is
there no data to support a choice and I'm over-analyzing and it doesn't
matter anyway.
Let us know if you notice any change when you go
to premix. My old 1988 RX-7 felt spunkier when I started using
premix in it but it was an old 150K mile beater.
If you were
doing the 50-50 MMO at the time, that could make a difference. It
contains both toluene and xylene which are very combustible. Some 2-stroke
oils contain other octane enhancers. The Super-Tech is 'pre-diluted'
("with what"? you may ask) to make it mix more readily with fuel.
What Pre-mix
ratio?? IIRC,
I've heard on this list to use about 1 oz per gallon, which is about
130:1. Most 2-stroke applications are somewhere in the 20 to 50 :
1.
Al (Still
grounded working on
mods)
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