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Question about Making the Switch from Castor to Synthetic Fuel.

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Question about Making the Switch from Castor to Synthetic Fuel.

Old 07-05-2015, 10:41 AM
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gregoryshock
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Default Question about Making the Switch from Castor to Synthetic Fuel.

Ever since I started in the hobby I've always ran my model engines on Omega 2cycle Fuel by Morgan. http://morganfuel.com/ My hobby shop didn't have it in stock. I normally run 10% nitro and He had 10% in Cool Power by Morgan. The difference is Omega is Castor/Synthetic and Cool Power is completely Synthetic. After I got home, I got to wondering if it would be ok to mix the two. Really I don't want to mix the two, but the issue is: When my first bottle gets too low, I need to open a new jug to finish filling up my fuel tank. I contacted my dealer, and He didn't know for sure. What do you guys think?
Old 07-05-2015, 11:02 AM
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j.duncker
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99% sure mixing will be OK.
Old 07-05-2015, 02:45 PM
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JohnBuckner
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I agree with j.duncker , you will net even note a difference. I have inherited all sorts of fuel at times and mixed with no worries.

John
Old 07-05-2015, 03:08 PM
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@j.duncker and @JohnBuckner I think you both are right. I also wrote morgan fuels. I posted this thread just in case they don't respond. If or when they do respond, I will let all of you know what they say. I think it's going to be around 10 flights or so before I need to do this.
Old 07-05-2015, 06:46 PM
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Gray Beard
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Like John I was given a bunch of fuel with different types of oil and nitro content. First I ran tests with each one to see how the nitro content affected my engines, YS 1.10s for the testing. Then I mixed all the fuel, both synthetic and blended oils. Only thing I did try to do was blend it so the fuels came out to close to 15% nitro, plus or minus a little. Wasn't a big deal, the test engines ran fine from 10 to 30% nitro but I would have had to tune for a better idle when it went down to the 5%. All the oils were between 15 and 20% so I didn't have to worry about it.
Old 07-07-2015, 07:53 AM
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Jennifer Curtis
 
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Mixing these two fuels will cause no trouble at all.
I've mixed multiple fuels from different manufacturers
and of various ages (some decades old) without any
problems. Whenever I do this, I let it sit about a week
to see if any reaction occurs, like congealing of the
oils. So far nothing has ever happened.

When you start using the Cool Power, be sure that
your engine is not running at the peak rpm needle
setting. Set it a few hundred rpm on the rich side.
This is to keep it from leaning out in flight and over
heating the engine. Since Cool Power has no
castor, it doesn't give have the high temperature
protection.

Other than that, there isn't any notable difference
between these fuels.

Jenny
Old 07-09-2015, 11:24 AM
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jester_s1
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Omega is a synthetic/castor blend anyway, so you'll just be creating a more synthetic blend when you mix them. Do be aware that if you live in a humid environment, the synthetic castor doesn't give you the protection from corrosion that you are used to with the Omega fuel. Some after run oil would be a good idea to keep your bearings from rusting.

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