After run Oil
Jeff Hughes
jhughes at hsonline.net
Wed Nov 19 09:58:44 AKST 2003
Dean,
I guess that is what is confusing me. Mobile 1 is synthetic oil mfg'd
to mimic oils made by distilling. The only difference between them is
the Mobile 1 molecules are all identical, giving better viscosity,
temperature range, etc., where natural oils have a range of lengths.
Rubbers that are incompatible in regular motor oil are also
incombatible with Mobile 1.
> Hi Jeff,
> It's a straight synthetic.
> Dean P.
>
> -----Original Message-----
> From: Jeff Hughes [mailto:jhughes at hsonline.net]
> Sent: Wednesday, November 19, 2003 7:30 AM
> To: discussion at nsrca.org; discussion at nsrca.org
> Subject: Re: After run Oil
>
>
>
> If you can't use petroleum based lubricants in a YS, why are people
> advocating using Mobile 1? It's synthetic petroleum base.
>
>
> > It is petroleum based.. Not for YS
> > John Ferrell
> > 6241 Phillippi Rd
> > Julian NC 27283
> > Phone: (336)685-9606
> > johnferrell at earthlink.net
> > Dixie Competition Products
> > NSRCA 479 AMA 4190 W8CCW
> > "My Competition is Not My Enemy"
> >
> >
> > ----- Original Message -----
> > From: mike mueller
> > To: discussion at nsrca.org
> > Sent: Tuesday, November 18, 2003 7:43 PM
> > Subject: RE: After run Oil
> >
> >
> > I've read that Marvels Mystery Compressor oil is the thing to
> use. Any thoughts? By the way I saw quite a few problems with the
> pushrods and the pump cams on the DZ's this last season. The pre
lube
> thing sounds smart. Mike
> >
> > Dean Pappas <d.pappas at kodeos.com> wrote:
> > I agree with Eric ...
> > I have seen more wiped cam followers and abused cams than you
> can shake a stick at, and I believe that most of it happened in the
> first minute of running a new engine. Once the surface galls, it
wears
> differently for many hours of running. A good pre-lube in a new
engine
> is an excellent idea, especially with the DZ not having raw fuel in
> the crankcase. The same oil as used in your fuel would also be good.
> Don't try any automotive cam pre-lube: it usually has moly-disulfide
> and will mess up glo-plugs and running until it washes out of the
> enginne. Don't ask how I know!
> > Regards All,
> > Dean
> > -----Original Message-----
> > From: Henderson,Eric [mailto:Eric.Henderson at gartner.com]
> > Sent: Tuesday, November 18, 2003 10:29 AM
> > To: discussion at nsrca.org
> > Subject: RE: After run Oil
> >
> >
> > The interesting thing about using Mobil -1 as an after-run
oil
> is that it really behaves like a before-run oil. - more on that
later.
> >
> > One thing that I noticed on YS's is that when we run them
dry
> of combustible fuel we forget that there is fuel still in the cup
> portion of the piston if we are running inverted. It is a good idea
to
> run the engine out with the engine upright. If you run it dry
> inverted, it will always give you one more pop if you try it again
the
> right way up.
> >
> > The best way to protect a YS is to treat before the first
run.
> A tear-down looking for ali-crud is always a good idea. Then just
> smear everything with Mobil-1 on reassembly.
> >
> > (As an aside my YS 1.10 spit a prop this weekend without
> warning. The culprit was a chard of aluminum stuck in the silicone
> poppet valve in the regulator. This caused fuel to leak to the carb.
> Tightening down the regulator stopped that happening, but when the
> piece fully embedded itself it then had a good seat-seal and caused
a
> very lean feed to the carb. - Will check for that next time)
> >
> > If you use Mobil-1 you will find that it does not mix with
the
> fuel. It will cause a good smoke cloud and mess with the initial run
> of the engine.takes about 60 seconds to burn it all out. I believe
> that during this burn-out that is when it does the most good to the
> engine. Mobil-1 appears to get into the "skin" of metal such as
> crankshafts and definitely has kept my bearings in good shape.
> >
> > Regards,
> >
> > Eric.
> >
> >
> > -----Original Message-----
> > From: discussion-request at nsrca.org [mailto:discussion-
> request at nsrca.org]On Behalf Of Bill Thompson
> > Sent: Monday, November 17, 2003 7:48 PM
> > To: discussion at nsrca.org
> > Subject: Re: After run Oil
> >
> >
> > Terry
> > What you just said is what I have been doing since the late
> 80's. I asked the question because three or four people told me that
I
> am killing my engine's. I replaced my bearings after over 200
flights
> no rust and just like you said it was to make me feel better. I am
> running 25% Cool Power synthetic. Thanks for your help.
> >
> > Bill Thompson
> > AMA 7703
> > ----- Original Message -----
> > From: Terry Brox
> > To: discussion at nsrca.org
> > Sent: Monday, November 17, 2003 6:27 PM
> > Subject: Re: After run Oil
> >
> >
> > Hi Bill,
> > You will get a wide range of opinions on this. The
> main difference will be whether or not to use any, and if not,
whether
> or not to run the engine dry.
> > I never use after run, however, performance
> specialties sell an after run that will not harm the internals of
the
> engine. DO NOT USE A PETROLEUM BASED PRODUCT OF ANY KIND.
> > I run Cool Power heli fuel and run the engine dry
> after flying. I never have replaced bearings because of need. I have
> replaced the bearings just to "make me feel better" but they seemed
> fine. When I rebuild a YS, the inside is full of oil, even though I
> run it dry after flying. When running it dry, only the part of the
> fuel that burn will run out, leaving a good bit of oil still in the
> engine.
> >
> > Hope this helps get the thread started, good
luck,
> Terry
> > ----- Original Message -----
> > From: Bill Thompson
> > To: discussion at nsrca.org
> > Sent: Monday, November 17, 2003 4:06 PM
> > Subject: After run Oil
> >
> >
> > What is the best after run oil should I use in my YS
> engines ?
> >
> > Bill Thompson
> > AMA 7703
> >
> >
> > -------------------------------------------------------------------
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