C-11 question

[Lee Jordan (3223) A/S]

Originally Posted by James L Miller

My thought is the light ends of gasoline that evaporate quicker (butane, etc.) have the higher octane ratings than the heavier molecules. Maybe the problem becomes detonation instead of going lean?

https://en.wikipedia.org/wiki/Octane_rating

You would be correct. BUT, if the cans remained sealed and the day temps didn't get high enough for the cans to leak it should be ok. I would sample it at a sanctioning track to be sure it passes tech. That would be my only concern as well.

Lee,

[Mike Croley]

Originally Posted by Everett Vassar

I felt pretty good till I read your last sentence. .so your saying if the fuel is bad it will go lean? It's been sitting in the trailer on a wooden floor all winter had one freeze but hasn't been past mid 80,s here in the DFW cluster F

The problem with big swings in temperature is moisture forming on the inside of the metal container. It's made even worse by the metal container sitting on a dirt, concrete, or metal floor. Always store containers of race fuel on wood pallets or wood planks.
Once water begins to accumulate in the can, rust can begin, and it doesn't take long.
And the metal can, or for that matter any container with race fuel in it, will see a pressure increase as the temps rise. And that can force the light ends out of an incorrectly sealed container. Those light ends are important in racing fuel.