Fuel Saving Tips
Pretty much all receipts are now printed on thermal paper or carbonless paper that is so sensitive, it also reacts to the frictional heat generated by simply scoring it with your finger nail. That means, you can just scribble the odometer reading on the receipt with your fingernail or key. No pen needed!
posted by gory on August 22, 2011
this tip works for 86% of voting Fuelly members.