I have a 165-gallon Roth tank in my garage to fuel the BX and my 4-cylinder Lister Petter generator. The problem is that the price of fuel has skyrocketed and getting it filled requires a truck to come to the home. My old fuel oil dealer who used to supply my inground tank has said that if he has a delivery in the neighborhood he will stop by. He hasn't been by in 2 years. The last price that I saw for fuel oil was $3.65 a gallon. I will continue to use 5-gallon cans filled with 3 gallons of fuel till I get the tank filled. I like to have enough fuel on hand to keep the generator running for 7 - 10 days if the power goes out.