After run oil- cheap but good

Glow/Nitro and gas engines, propellers, fuel and other stuff associated with making lots of noise and thrust.

After run oil- cheap but good

Postby spitfire2010 » Sun Sep 26, 2010 10:31 am

Title speaks for it's self.

Any suggestions
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Re: After run oil- cheap but good

Postby RCModelReviews » Sun Sep 26, 2010 8:17 pm

Some people use automatic transmission fluid, I've used Mobil 1 synthetic, and others swear by air-tool oil.

The ones you shouldn't use are WD40 (very little lubrication and not that good at rust-prevention) or anything with silicone in it (it will foul your plug when you run the engine next time).

I've found that the Fuschs AeroSave oil I use when making my own fuel has incredible after-run protection and so I've not had to bother with ARO since switching to this oil.
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Re: After run oil- cheap but good

Postby spitfire2010 » Sun Sep 26, 2010 11:25 pm

Your not running nitro in your fule are you?

I think i've asked thsi before although i cant remember

Ian
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Re: After run oil- cheap but good

Postby RCModelReviews » Sun Sep 26, 2010 11:43 pm

Yep, I run 5% in my 2-strokes and 10% in my 4-strokes.
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Re: After run oil- cheap but good

Postby spitfire2010 » Mon Sep 27, 2010 8:22 am

Thanks Bruce.
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Re: After run oil- cheap but good

Postby jeffie8696 » Mon Sep 27, 2010 9:25 pm

Motor oil for your car engine has a lot of rust preventatives and acid neutralizers that are very beneficial to glow engines.
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Re: After run oil- cheap but good

Postby spitfire2010 » Tue Sep 28, 2010 12:06 pm

Just as a side thought would the engine motor oil gum up or leave deposits in the engine
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Re: After run oil- cheap but good

Postby RCModelReviews » Tue Sep 28, 2010 6:24 pm

There's the potential for some carbon -- that's why I used to use Mobil 1 synthetic motor oil. No residues at all.
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Re: After run oil- cheap but good

Postby pushinoldrc » Wed Sep 29, 2010 12:59 pm

Bruce,
I have read that some oils do not mix with methanol, and will separate, as castor oil does separates from petrol without additional additives (5% acetone is supposed to help suspend the castor oil). Have you had any issues with separation in your home brew?
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Re: After run oil- cheap but good

Postby RCModelReviews » Wed Sep 29, 2010 8:54 pm

No, the oils I use are ester-based synthetics which blend very well with methanol. Most regular 2-stroke oils designed for gasoline use won't mix with methanol at all.

Some times of "modified" castor won't blend well with methanol but the ones intended for model fuels blend fine, so long as you don't use more than about 40% nitromethane. Once you get to that level of nitro the castor can come out of solution.
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