RV Fuel Issues & Prices - Post 'Em Here!

I am thinking diesel may hit $5.00 this winter. I expect to pay over $900.00 more this year over last. Maybe if I can get my SS to be based on the raise of fuel costs as opposed to the COL I will be ok.
My Volt will offset the gas price but I need an eco-boost Diesel for my truck LOL. 10 MPG has room to move up while towing. GM said they had some surprises out there for us, this is one I'd like!