Fuel Question...Age?

EHaury at aol.com EHaury at aol.com
Sat Jul 5 19:27:05 AKDT 2003


Bob

I've used fuel that's been stored in the original shipping cartons for 5+ 
years with no problem. However, a few years ago Magnum had a batch of jugs that 
would develop a small crack, usually near the top in the vapor space, from 
flexing due to thermal expansion / contraction of the fuel. Generally it's pretty 
obvious, as the jug is not full due to escaping methanol. The remaining fuel 
is less volatile and can give varied performance.

The jug's "breathing" also admits moisture containing air, however moisture 
is not as detrimental as some profess. (Consider the amount of water in the 6 
or so lbs of air the engine consumes per lb of fuel.) Minimizing methanol's 
exposure to air both limits moisture incursion and volatile matter excursion, 
both bad.

Earl
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