I for one fell for the ads on centramatics,well must tell you,ive used that powder called equal for years,til this last set of tires,I now have the centramatics,but in all honesty,they do not help anymore than the powder I had been useing .just when you change your tires the mechanic wont be happy if he gets a face full of powder.Also ,when checking tire pressures,you might need to blow air into the tire to get the powder out of the valve stem.and another thing,always use the air from your truck,that has run thru an air dryer,as if you get moisture in the tire,will screw up the powder.No more centramatics for me,a pair is all ill have,other tires still have powder called EQUALWhat rpm are you running when getting 8.5 and also when getting 7.5? As others have said, slowing down is top of the list for many. I also think Airtabs are worth some. Another potential small savings comes with Centramatics. Every time the tire is bouncing up and down it's losing efficiency. You probably wouldn't see more than maybe 0.1mpg difference but you also benefit from the better ride.
Sorry but fuel additives will actually cost you fuel mileage,sure use once in a while to clean injectors,or if you have water issues,but dont use every time you fuel.just like #1 fuel will also cost you fuel mileageSlowing down to a speed that get you into the highest gear is one of the biggest things to improve your mpg.
But when you are figuring your cost per mile, are you figuring in the extra cost of the additive that you poor into the tank? If it cost you 2 cents per mile to gain a one cent savings then it is not worth it if you are just trying to decrease your cost per mile. (not taking into account any benefit to keeping the engine in better condition.)
OK people, diesel over $4.! What are your top suggestions for increasing your trucks MPG? Does anyone know of, or recommend a fuel additive which is designed to increase MPG? We're driving a 08 Western Star with a MBE4000-450 and a 13spd Ultrashift which on a good day gets 8.5MPG (usually 7.5).
The newest most fuel efficient duals save you 4%What's all this I hear about "super-single" tires saving gas? Wouldn't that conversion be worth it right about now given the fuel prices?
Plus, better ride, quieter ride.
Are blowouts that more of a concern though?
Guaranteed 4% savings, that would save Schneider at least 5 BILLION ($5,000,000,000 ) a year, Now thats real money.