My 52 did it too.
I'd only fill it up all the way if I was going to be driving a long distance right then.

Before I figured it out I'd fill up, get home, then later smell gas and have to go repark it on the side of a hill. By the morning it would cool off and I'd be fine on the way to school.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-