every 1,500 to 3,000 miles

Fact is, you can use too much Techron and cause damage to your fuel tank lining. You mention the vehicle runs better after you use it. You should try to run your fuel tank down to around a quarter tank. After you have it down that low, you should probably take around 15 gallons of fresh fuel.

While most fuel additives are, at worst, harmless, Trotta warns against using engine cooling system additives that claim to plug leaks. These, she says, will only work temporarily on small leaks, will have no effect on larger leaks and could cause damage to your car’s mechanics.

On a simple level, gas treatments work when they are present in the fuel before combustion. The recommendation would be to add any gas treatment you want to use during your fill-up, before you add more gas. Administer the recommended amount of gas treatment into your partially-filled tank, then fill up as normal.

1. Editor’s Pick: Chevron Techron Concentrate Plus Fuel System Cleaner.
2. Red Line Complete SI-1 Fuel System Cleaner (60103)
3. Royal Purple Max-Clean Fuel System Cleaner and Stabilizer (11722)
4. Liqui Moly Jectron Fuel Injection Cleaner.
5. Sea Foam Motor Treatment (SF-16)
6. Lucas Oil Deep Clean Fuel System Cleaner (10512)

Cost of a Fuel System Service According to Angie’s List, the average cost of a fuel injector cleaning ranges between $50 and $80. However, these figures could be a bit higher, depending on the make and model of your vehicle.

Lucas fuel treatment definitely works. I use it at a dilution of 1 ounce of Lucas per 5 gallons of fuel, and buy it in this large gallon size which treats 640 gallons of gas. I know it says treats 400 gallons but when you look at the little 5 ounce bottle that on treats 25 gallons and it is the same product.

When you look at this product a little closer, it’s easy to see why it’s so good. The product is designed to be extremely safe to use and thus contains no solvents, alcohol, kerosene, diesel fuel or anything else that could damage engine parts.

Lucas Fuel Treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected. Also, it cleans and lubricates the carburetor and injectors and causes the fuel to burn more thoroughly for increased power and less fuel consumption.