Originally Posted by oldbeek
WHY??? Spend $1,000.00 for an extra tank. Always in the way etc etc. Been all over USA, Canada and Alaska. Never been more than 150 miles between fuel stations. My range is 350 miles towing. OK, if you own Diesel heavy equipment that needs refueled daily in the field , there is a valid reason to have an auxiliary fuel tank.
I guess the most practical reason "why" would be the opportunity to be able to save money when you can locate Diesel fuel at a reasonable price. Granted the $1000 investment would have to be reimbursed by the savings of diesel price, but 4 to 6 fill ups would more than take care of the investment, I have seen Diesel $4.50 per gallon to $3.99 per gallon depending on the location within the country. It is the fill-ups that have the fuel at the cheaper price that will kick the savings into gear eventually. It would probably take two or three separate road trips before you could compensate for the initial cost of the retrofit.
Another reason would be convenience of not having to stop at the 300 - 350 mile point. For me that sounds attractive to drive 700 to 800 miles and when you are tired not have to worry about finding a fuel station at your way point.
It is all a matter of preference and desire. Not everyone shares the same thoughts on the matter. That is to be expected and appreciated for all parties concerned.