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There are some practical ways to increase the gas mileage but you can use also Fuel Infusion what is a powerful fuel catalyst. Fuel Catalyst realy helps to increase to boost your engine power and your gas mileage.
There is no fuel additive that will increase mileage. This is a myth. None of the snake oil additives work.
To increase fuel mileage.
There are a few ways to increase gas mileage but the most effective is the use of fuel infusion. Fuel Infusion is a powerful fuel catalyst that improves the efficiency of the combustion process in your car's engine.
You can increase fuel mileage by installing a tuner or a bigger exhaust. I'm sure there are some other ways also if you look into it but these are two of the best ways.
It will increase performance but will decrease mileage, not increase it. More performance uses more fuel.
try installing a tornado from PEP Boys
Your vehicle will not run if you bypass the computer. Nothing you can do to the computer will increase fuel mileage. Assuming the engine in your vehicle is running properly, keep your tire pressure as outlined in your owners manual, carry as little weight in the vehicle as possible, take off slowly and drive the speed limit. Other than doing this there's nothing you can do to increase fuel mileage.
Fuel additives are used to improve an automobile's environmental performance and increase its mileage. Some homemade fuel additives are ethanol and a mixture of acetone, xylene and cycle oil.
Two good parts for a 1998 Dodge 1500 with a 5.9 liter engine that increase power and mileage are high performance air and fuel filters.
A dual exhaust system & or headers will increase fuel mileage but only slightly. Not enough to recoup the expense of the systems.
The Simple answer: Radial Tires Roll down the road easier. How and Why is quite complicated