I put one of these in the tank every 5000 miles..I have been doing this for over 15 years and have not had one car with any injector or fuel system problems..A Mercedes mechanic once told me it was a like a shot of penicillin to the car...Don't use anything else.

SI-1 Complete Fuel System Cleaner


SI-1's injector and valve detergent is a concentrated package of the most powerful high-temperature detergents available to clean gasoline fuel injectors, intake valves and combustion chambers. SI-1 Complete Fuel System Cleaner can clean injectors to nearly 100% efficiency in one treatment. The cleansing effect on injector deposits can raise fuel economy approximately 12% or even greater, depending on the condition of the injectors. Although many gasolines advertise injector cleanliness, GM presented a paper to the SAE which indicates that their customers encountered injector plugging with all major brands of gasoline (SAE 861533). SI-1 also contains detergents and a synthetic upper cylinder lubricant which will help clean the intake valves, pollution control valves, combustion chamber deposits and carburetors. One bottle of SI-1 to a tank of fuel can reduce octane requirements by two numbers. SI-1 also protects the fuel system from rust. One bottle treats up to 100 gallons. Safe for continual use.

 

I've always had good results with Chevon's Techron.

 

We use this in our cars in Mexico. The gas down there is not the cleanest!

 

Is it true that after one uses a fuel system cleaner the oil should be changed?

 

I have never heard of that SD in all my 51 years...Since this stuff vaporizes carbon and crap, it should just blow out the tail pipe

 

Thanks Dennis. Yeah I heard that one some TV show about car care quite a few years ago. Thank you for clearing that up.

 

It says ONE bottle treats up to 100 Gallons? Does that mean this stuff is like Stabile, where you only use a capful in a tank?

 

It just put it in one out of every four or five tanks of gas.

 

[sm=chairshot.gif]Why must you always complicate thing?...

Use the whole bottle all at once..In a full tank and don't fill up again until you're almost empty...[sm=smiley31.gif]

 

That's good stuff..........I also use Lucas.