One of those bits of knowledge picked up from somewhere, probably Dad, earlier in life and now it rattles around my head every winter. Supposedly it’s important to keep the gas tank of one’s car at least half-full in cold weather because if it’s less than half-full there isn’t enough “gas pressure” to keep the fuel line from freezing. True or false? If it’s false, was it ever true?
We just did this
Pressure keeping the fuel line from freezing? No.
So we did. Missed it. Ah well, at least my question was a little different (even though brewha pretty much answered it anyway).
You might want to also read posts #28 and #40
Not quite andwwered. There are things northerners and Canadians to to prevent gas line freeze and dead batteries due to the cold. When I was young vapor lock and gas line freeze were problems. Another is freezing door locks. Fuel injection may have taken care of gas line freeze, but the others remain.
It’s also a good idea to keep the tank full in the winter in case you’re ever stuck somewhere and need to run the car for warmth.
Vapor lock and gas line freezing are NOT even close to the same problem. Vapor lock is caused by the fuel boiling inside the fuel line preventing liquid fuel from reaching where it needs to go. This should not be a problem in the middle of winter.
That’s why I do it. And you never know what you may come up against. When I-70 shut down a few years ago and I was stuck on the road with everyone else for 3 hours, it was very nice to know that I had plenty of gas and would not become part of the problem.