House closing

So, dear readers, my house is finally under contract. Cue the marching bands. Yesterday I started making some calls on quarterly services (to put a stop to them), but also called my oil dealer asking them to not make any more deliveries between now and the end-of-October closing. They said the smarter thing (and best way to recap my money) would be to fill the tank the day before closing so that the buyer would be asked to pay for the full tank at day of closing instead of some guesstimate of the amount actually left in the tank. Really?

Help! Is this the smart way to handle this situation and my money? Or the smart way for the oil dealer to handle my money?? I hope people out there can tell me. I'm seeing my realtor on Friday and will ask him then, but was curious if others might know the answer. This is a new one on me. Figure the answer will be helpful to anyone buying a new home.

Not wanting to waste a single dime,

-reenie