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Old 12-23-2014, 09:16 PM   #1
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Default After Run Fuel... what is it?

Noticed this is getting more and more popular and curious as to what it is exactly. I read to is just methanol and castor oil. Methanol attracts moisture so isn't this the opposite to what you want to achieve?
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Old 12-24-2014, 12:48 AM   #2
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Castor oil is a bit sticky and does not attrac moisture, it will create a perfect airtight seal on the metal parts.
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Old 12-24-2014, 04:29 AM   #3
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Roleof:

Thanks for reply, do you think any difference between this method and burning fuel out and adding aro and giving it a bump on starter box to move it around motor?
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Old 12-24-2014, 05:03 AM   #4
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Basicly no, but....
Castor has a negative thing that it will dry out. It can block the needles and lock the piston if it is not used for a long time. A good afterrun is made of an oil that will not dry out.
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Old 12-24-2014, 05:33 AM   #5
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Andrew, NitroMethane (CH3NO2) is also 02 rich, it's an oxidiser itself. So while many point out the hydroscopic nature of methanol that forms rust (oxide), the Nitro itself will too.

Hugs to Abby and a very merry xmas and new year to you.. and you too Roelof!
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Old 12-24-2014, 06:40 AM   #6
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Andrew, NitroMethane (CH3NO2) is also 02 rich, it's an oxidiser itself. So while many point out the hydroscopic nature of methanol that forms rust (oxide), the Nitro itself will too.

Hugs to Abby and a very merry xmas and new year to you.. and you too Roelof!
i use auto transmission oil,it contain with anti-oxidant additive and mineral based not easy to dry off
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Old 12-24-2014, 07:11 AM   #7
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all of the after run oils I've bought all are colorless and odorless. which makes me wonder if it's simply mineral oil.
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Old 12-24-2014, 07:42 AM   #8
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Bundy was referring to After Run "FUEL" not just After Run, I use a gear oil. As long as it doesnt rreact with the fuel, with and without combustion, you should be fine to use any inert oil.
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Old 12-24-2014, 08:43 AM   #9
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ARF!! If contains Nitromethane, why use it? Nitromethane is still caustic. Father use ARO. Marvel Mystery Oil(MMO) or Auto Transmission oil. ATO considered a detergent oil. Pint of it should last 15-20 years.
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Old 12-24-2014, 10:47 AM   #10
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ARF!! If contains Nitromethane, why use it? Nitromethane is still caustic. Father use ARO. Marvel Mystery Oil(MMO) or Auto Transmission oil. ATO considered a detergent oil. Pint of it should last 15-20 years.
I totally agree, keep it simple man your over thinking it. Ive use automati c transmission fluid for years. For season end storage, I do take engines apart and clean and dry with isopropyl alcohol, then oil eveything.☺
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Old 12-24-2014, 11:45 AM   #11
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And this subject starts all over again as with many topics on this forum about afterrun.

The question was not what everyone is using but what is the difference between an afterrun fuel based on castor oil or an afterrun oil.
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Old 12-24-2014, 02:59 PM   #12
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Originally Posted by blis View Post
Andrew, NitroMethane (CH3NO2) is also 02 rich, it's an oxidiser itself. So while many point out the hydroscopic nature of methanol that forms rust (oxide), the Nitro itself will too.

Hugs to Abby and a very merry xmas and new year to you.. and you too Roelof!
Hi Harry

Merry Christmas

I don't believe after run fuel contains any nitro.
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Old 12-24-2014, 03:00 PM   #13
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Quote:
Originally Posted by Roelof View Post
Basicly no, but....
Castor has a negative thing that it will dry out. It can block the needles and lock the piston if it is not used for a long time. A good afterrun is made of an oil that will not dry out.
Roelof

Thank you, sorry for causing more debate about aro and Merry Christmas.

Andrew
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Old 12-24-2014, 03:54 PM   #14
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Hi Harry

Merry Christmas

I don't believe after run fuel contains any nitro.
Yep brother, that's why some ppl use after run fuel to flush all the nitro out
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Old 12-24-2014, 06:40 PM   #15
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Save yourself some money and just get Marvel Mystery oil. Same stuff
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