Sad part is my parents may have finally learned their lesson on listening to my advice when it comes to the farm stuff. Told them in October since the 1500 gallon tank was empty, with only the 350 full, to go ahead and refill it. They wanted to wait until the 350 was fully emptied. When I said to fill it, off road diesel delivered in bulk was 1.36 a gallon. They had to fill it 2 weeks ago... at 3.499 delivered.