We are the type of people that do not want the gas tank to go below half.
I take any reasonable opportunity to fill the fuel tank, the propane tank, the water tank, the pantry, my supply of dark chocolate and nuts and empty the waste tanks - simply because we mostly boondock and we never know how long it'll be to the next topup.
All got gauges so do what suits you.
Tony Lee - International Grey Nomad. Picasa Album
- Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper