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 Posted: 04-30-2007 04:21 pm
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73healey
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Location: Lodi, California USA
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I was going to use a fuel additive such as Berryman B12. Are there any pro's or con's to using such additives once in a while?

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 Posted: 05-01-2007 01:36 am
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Jensen Healey
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I use some Marvel Mystery Oil now and again to lubricate the gas tank hoping to prevent rust!

What is Berryman B12 supposed to do?

Kurt

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 Posted: 05-01-2007 05:02 pm
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Greg Fletcher
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I don't think a small amount would hurt, but the idea is unsound. The B12 is a "Gumout" style product, which often contain 80% or more of acetone. Acetone is a great solvent and fuel deposit cleaner, but why do you need it? Better quality gasoline has all sorts of cleaners in it already. If your carbs are gummed up it makes more sense to R&R them on a bench that running cleaner through them.

I'd be cautious on an older engine with these type of products- suddenly removing decades worth of internal engine deposits can also result in excessive smoking that won't go away. Acetone also dissolves rubber and plastic so the old style plastic fuel-T on the JH won't have a chance!

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