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----- Original Message ----- From: "Charlie & Tupper England" <cengland@netdoor.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, March 10, 2004 3:59 PM
Subject: [FlyRotary] Re: marvel mystery oil?
Bulent Aliev wrote:
On 3/10/04 10:46 AM, "Russell Duffy" <13brv3@bellsouth.net> wrote:
Greetings,
Is anyone still using MMO for their fuel additive? I think Tracy
used it for a while, but I'm not sure if he still does. Is there a
consensus of whether this stuff will do the job for us? I add an
extra 4 oz of it to the RX-7 tank at every fill, but that doesn't
prove much.
The reason I ask, is that I've been using a "normal" TC-3 type oil
in the plane. I've had a problem getting it to mix well, and it
sometimes wants to just sit in the low part of the tank. I'm sure
I can shake, slosh, etc the plane around enough to get it to mix,
but I'd rather find something that is thinner, and will stay in
solution better. It just seems like MMO would satisfy that
requirement.
Thanks,
Rusty
Rusty, Paul Lamar conducted a oil burning test to see how much
“sludge” is left after burning out.
Turned out 2 cycle oil was the best MMO was not that good for this
application.
Bulent
His test was 'interesting', but if Tracy, Ed, & probably others are
getting unburned 2stroke oil scavenged from the combustion chamber into
their crankcases, I gotta ask if his test has any significance in this
application.
What do you guys that are flying think?
Charlie
I have used a mix of MMO and 2 cycle oil for a short period. Then after
some research decided that "Marine" type 2 stroke oil was ideal for the
rotary and much cheaper than the MMO and 2 cycle oil I had been using. I
use 1 oz/gallon and end up after about 10 hours of flying draining approx
1/2 -1 cup of oil from the sump. Pennzoil makes the brand of 2 cycle marine
oil sold by Wall-Mart and it is the most reasonably priced I have found.
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
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