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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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