A question for those Winter fisherman.....

Have you ever had any problems with gas and it expanding with a DRASTIC weather change.

Here is my problem......and it may not be expansion at all.

I went fishing a couple weekends ago........REALLY, REALLY cold. When I got back, I filled the take completely full. Not over flowing, but the tank was full. Today, I smelled gas, and found that I had a small puddle of gas in my garage, When I popped the filler cap, gas squirted me.....

Now, I know from past experience with smaller tanks that gas, when it gets shaken up, will cause the fumes to expand. Is this what is happening.......and if so, what is the answer.......

Mostly though, I simply want to know if other people experience this, etc. BTW.......I've had 5-6 boats, and this is the ONLY one that I've experienced this with, and this boat does not seem to have a "vent valve" like others did.

Any help would be greatly appreciated.

Thanks,

Geo