Winter Storage with Full Tank Of Gas or Not?
Do you store your RV with a full tank of gas (to cut down on condensation in the gas tank), or fill it up with fresh gas in the Spring? Thanks for your responses
Forum Discussion
babock wrote:They "DO" breathe. They exhale through a charcoal canister for the purpose of emissions. If they didn't breathe, the engine would die from the starvation of fuel somewhere between a full tank and an empty tank of gas, via a created vacuum.JaxDad wrote:Fuel tanks do not "breathe". Even if they did "Breathe", the amount of air being pushed in and out is tiny. Any vehicle built in the last 25 years, including RV's has a fuel system that is sealed to the air for emissions reasons.
Fuel tanks breathe, as the liquid and air warm up they expand and push out air, that evening they cool and condense pulling in replacement air which is generally very moist and the cycle starts all over again. This happens all year long, anytime it’s warmer during the day than it is at night.
You would be surprised how much air is drawn daily and and exhaled through the charcoal canister. As JaxDad stated, it is a daily process. Temps outside often swing 30 to 40 degrees between the heat of the day and the low during the night which causes the breathing action. That action is minimized with a full tank of gas. Less air in the tank means less air to breathe. With a full tank of gas, there might be so little air that the system isn't breathing at all.
