Quote:
Originally Posted by Sunny the Model A
Marvel seems to help prevent vapor lock during summer, here in charleston sc if you sit in traffic with ethanol fuel it can like to sputter a bit, I add a bit of marvel and it goes away. Used motor oil does the same thing.
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I’ve tried Marvel and it doesn’t prevent vapor lock. I’ve tried other things too, and it’s really the carb temp which boils off various parts of the fuel creating the lock.