You folks need to try Lucas gas treatment. (No, I don't own stock in the company.) It costs $10.00 for 5 tank fulls and you get 40-50 more miles per tank. A no brainer at today's gas prices. Also, try 39 lbs of tire air pressure, it helps our mileage, as well. Less roll resistance. Keep coasting and taking it out of gear at lights, but keep the PRNDL linkage well lubed with lithium grease.