In this time of year when it is winter one day and almost spring the next, the best way to avoid fuel line freeze is to keep the fuel tanks full – or as nearly full as makes sense.
Empty space in the fuel tank and lines is filled with condensation when weather gets warmer, and ices up when cold returns: fuel line freeze is the result – and jump starts, tows, roadside service, delays, and expense follow.
Trips with prepaid fuel are a perfect opportunity to keep the tank full and avoid delays, problems, and expense. Other trips are most successful when you do not permit the fill-level of the tank to get below 1/2 full.