After Run Oil with Omega Cool Power? - RCCanada - Canada Radio Controlled Hobby Forum
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Old 04-27-2004, 09:38 PM   #1
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After Run Oil with Omega Cool Power?

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I noticed on the new Cool Power fuel jugs (with the paper label) it says after run oil is not needed. I compared to the old bottle with the stamped on label and couldn't find any refrence?

Have they added some anti-corrosion/rust chmicals or anything, I'm still using Hobbico after run oil in my engines, I've also heard that air tool oil is a much cheaper subsititute.

Any thoughts on this one?
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Old 04-27-2004, 11:44 PM   #2
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all i've ever used is the green after run oil ever unless i know that i wont be using the engine again and that i want to sell it.then i go ahead and oil and plastic bag it..i've left some of my own engines sit all winter with just the residual oil left behing from the coolpower and have never had a rust a matter of fact i just took the backplate off to check some of my engines after sitting for a few months over the winter and they look just like new
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Old 04-28-2004, 01:42 AM   #3
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I've heard that you don't need arfter-run when using cool power also, a cheaper alternative after-run is Automatic Transmission Fluid mixed with Rislone 50/50. I've using this mix for many years with no problems.
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Old 04-28-2004, 03:03 AM   #4
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What is Rislone?
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Old 04-28-2004, 03:20 AM   #5
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An oil additive you can get at Crappy Tire, Wal-Mart and such places it tends to flow all over your engine's surfaces or so I was told by a mechanic. Because of this coating effect I also put it in my snowmobile, boat, etc engines for off-season storage
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Old 04-28-2004, 06:05 AM   #6
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At a cost of $4 a year, I use after run regardless. Everyone will have their own preference I guess. Just remember to run the engine out after the day is over.

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Old 04-28-2004, 06:37 AM   #7
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Here is my take...

(coincidentally, this is a topic some guys can get pretty heated over... Geesh!)

I myself have used an after run oil on most of my engines, most of the time. If I am flying the same engine weekly, I usually dont bother unless I will leave the engine for a few weeks. I use the hobby shop stuff and use a few bottles per summer, under $10. It to me is a small price to pay for the peace of mind that my engines are oiled and protected.

Now, some say that with using all castor based fuel, or with certain all synthetics you dont need after run, but leave some of the fuel in the engine (not run dry as I allways do). Well, that may be fine too, but I diont want to take the risk. I did damage one very expensinve engine a number of years ago, which I didnt use after run in. Since then (the last 7 or 8 years) I allways use it and have not had any issues with rust or bearing problems. Maybe I am lucky maybe its the after run oil? I dont know but hey, its a cheap, easy to do measure of preventative medicine...

As for engines being hard to start after using an after run oil? Hogwash. I have no problems ever, starting up my engines immediately when returning to the flying field.

Its a descision you will have to make in the end...
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Old 04-28-2004, 08:26 AM   #8
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Just wondering if Cool Power Fuels have also promised to pay for new bearing if they do rust up due to no longer using after run oil??

This may indeed be on the up and up but it may also be a gimmick to sell more fuel. As has been stated, for a couple of bucks a year why take a chance. Take a couple of extra minutes at the end of the flying session and put a few drops of after run in you engine.

I use full strength Reslone and after three years I took one of my .46 TT apart and the bearings were still shinny like new!
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Old 04-28-2004, 08:53 AM   #9
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I have had rust formation with Cool Power in a TT 46. This was a couple of years ago and maybe the new formula is different. I think that it also depends upon the humidity -- if you live where it is damp, water will be absorbed by the alcohol in the fuel & after-run is a good idea. If you live in a dry environment it probably isn't needed.

I now use Omega, & ATF as after-run -- no more rust formation.

Like Andrew, I onlyuse after-run if the engine won't see use for several weeks.
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Old 04-28-2004, 09:54 AM   #10
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water will be absorbed by the alcohol in the fuel

I lost 2 engines due to rusty aint worth the risk in my books.

The sooner you fall behind, the more time you will have to catch up.
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