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HomeAircraftHelicopterMain Discussion › Nitro engine after run oils!
09-10-2015 07:17 PM  33 months agoPost 1
sarky89

rrNovice

Marshalltown, Iowa-USA

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Anyone out there know if zmax micro lube is a good thing to use as an after run oil or will it cause the piston ring to expand?! Does or has anyone used it? Good? Bad?

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09-10-2015 07:19 PM  33 months agoPost 2
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

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Use a modern fuel with 100% synthetic oil content and you do not need an after run oil.

BTW: How does oil make a iron piston ring expand?

Also, any petroleum based after run oil will cause the regulator diaphragm in a pressure regulated carb to swell and fail.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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09-10-2015 07:37 PM  33 months agoPost 3
jbjones

rrVeteran

Columbus, Mississippi

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I run Byron fuel, and don't use after run oil.

However, if you feel that you need to use it, get some Corrosion-X. It's safe on silicon (and electronics, believe it or not), and lubes well too. I use it in my race boat engines.

-JB

J. B. Jones

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09-10-2015 07:40 PM  33 months agoPost 4
sarky89

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Marshalltown, Iowa-USA

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Probably the same way wd40 can make some rings expand, causing extra friction and excessive temperatures, in some cases it will cause the engine to not run! My question is "Is it okay to use as an after run/storage oil!" Some after run oils and atf can get gummy and zmax micro lube doesn't! Just not sure if it will harm the engine in any way!

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09-11-2015 02:56 AM  33 months agoPost 5
JuanRodriguez

rrProfessor

The Villages, Florida

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Probably the same way wd40 can make some rings expand, causing extra friction and excessive temperatures, in some cases it will cause the engine to not run!
That is the most ridiculous thing I've ever heard (in a while) !!!

WD40 is actually not a lubricant..... it is a formulation that was developed to displace water.... that's what WD stands for...."water displacement"..... the "40" represents the number of tries it took the company to get it right..... yes, the product you use today took 40 formulas to get it right !!

The problem with using WD 40 as an "after run oil" is that it will loosen rust that may have accumulated PRIOR to using the WD 40.... The slurry that results is much like iron oxide which will act as an abrasive compound (similar to valve grinding compound) and will lead to premature wear on your motor....

Not sure where you are getting your info from but if I were you , I would go someplace else !!!

As stated already, there is no need to use "after run" oil while using todays RC fuels.....

Now, if you are "storing" your motor for an extended period then that is a different story..... good ole ATF (automatic transmission fluid) is quite capable of performing that job.....

Been there, done that and old enough to know better.....

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09-11-2015 03:33 AM  33 months agoPost 6
Einzelganger

rrKey Veteran

Campbell, Texas

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As stated before,

ATF for storage and nothing else otherwise.
Synthetic lubes in modern fuel preclude the use of after-run oil.
Yep. Oil will not swell rings. Ever.

Wayne

I love the smell of nitro in the morning.
RIP Roman

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09-11-2015 03:43 AM  33 months agoPost 7
Ace Dude

rrProfessor

USA

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This is what I use and it's compatible with OS/YS pump/carb systems.

http://www.bj-model-engines.com/ultraoil.html

  

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09-11-2015 11:28 AM  33 months agoPost 8
Richardmid1

rrProfessor

Leeds, England

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Turn the starter shaft by hand a couple of revolutions every few days, no after run oil needed. The oil in the fuel is more than good enough.

60% of the time, it works every time!

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09-11-2015 12:32 PM  33 months agoPost 9
Jeff polisena

rrElite Veteran

westpalmbeachflorida usa

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I have a synergy n with os motor that has been sitting for over 4 years , used power master fuel and motor will stil turn by hand and I bet it will start and run with no issues . ATF would be my first choice if any . I worry more about fuel line replacement after long term storage .

I stole it ,flew it and gave it back ;)

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09-11-2015 12:57 PM  33 months agoPost 10
MartyH

rrProfessor

USA

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You can use it but as others have stated, it is completely unnecessary. Forget the snake oil.

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09-11-2015 01:12 PM  33 months agoPost 11
mystar60

rrVeteran

Clifton, NJ

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My practice is to pinch off the fuel line and start the engine which will run for a short period. Continue this until it will not start any more. This would indicate no more nitro left in the engine just oil. Then rotate the crank to top dead center closing off all ports.

If you are talking long term storage then I would apply a oil to the bearings via the removal of the rear crank case cover.

Watch at YouTube

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09-12-2015 07:13 PM  33 months agoPost 12
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

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The "nitro" engines do not run on "nitro"
The combustion process is based on alcohol as the fuel.

Alcohol is a catalyst for the platinum wire that is the "glue plug".
You heat the platinum wire to initiate the combustion process, but once the combustion process is started, the alcohol reacts with the platinum wire to keep the wire red hot.

You don't need nitromethane. You could run a "nitro" motor on 0% nitro.

But, even then, you still do not need after run oil if your 0% nitro fuel has 21% synthetic oil.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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09-13-2015 12:37 PM  33 months agoPost 13
rpat

rrElite Veteran

Weirton, W. Va.

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For years I run Risoline oil in mine after a session. Worked really good and on the next startup it even smelled different until it was emptied out of the crankcase.

trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2

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09-18-2015 07:24 PM  33 months agoPost 14
tailwhip

rrVeteran

Southern WI

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My practice is to pinch off the fuel line and start the engine which will run for a short period. Continue this until it will not start any more.
I agree with this practice. I always run my engines dry at the end of the day and still crank on them with the igniter on. Methanol is corrosive and will ruin the bearings if left in the engine. The left over oil will be enough to protect the engine. I had an old raptor 50 sitting in the basement for a few years and thought I would get it out this year, but found the swash plate rusted to the main shaft. I freed it up and was worried how the engine was. Started it up and it runs great. I have flown a half gallon through it since then.

Dennis M

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09-18-2015 09:00 PM  33 months agoPost 15
dkshema

rrMaster

Cedar Rapids, IA

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 the "glue plug". 
That would really gum up a nitro motor!

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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