Mike and Trish wrote:
Do you have a generator (or for that matter a hydronic heating system)? Those will usually cut off around 1/4 tank or so, a safety measure to preserve the last gallons for driving. One more reason to never go below 1/4 tank.
I disagree! That is the primary reason to never go below ONE HALF a tank!
That is also one reason to fill the tank before winter. If the house power goes out, and I have to move into the motorhome for a while, I do NOT want the generator to fail due to lack of fuel!
So, when it gets to half a tank, I start looking for a place to fill it, and I fill it before parking it for the winter (and add Sta-Bil).