The manufacturer of Auto Viagra has been in the petroleum industry since 1903 and it has its own Research and Development laboratory (unlike many additive companies) that thoroughly tests all products before they reach the marketplace. Auto Viagra stands behind the technology and quality of all Auto Viagra products. Most other fuel system treatments come with unnecessary carrier fluids that not only has no function except carrying the active ingredients, but the carrier fluids actually may harm the fuel system if used in excess. That's why most of them recommend usage at only once in 3,000 to 6,000 mile intervals.Auto Viagra fuel system treatment is safe to use every time you fill up your gas tank. It keeps your engine performance at its best at all times.

Compare for yourself	Auto Viagra	Duralube with SR3 Advanced Fuel System Treatment	Slick50 Fuel System Formula	Redline Synthetic oil SI-1 Intake and Valve Detergent	Stewart-Warner Alemite CD-2	Turbo Octane Boost 108	STP Technology's Edge Complete Fuel System Cleaner
Immediate Combustion Improvement	Yes	No	No	No	No	Yes	No
Immediate Power Increase	Yes	No	No	No	No	Possible with 87 Octane	No
Immediate Emissions Decrease	Yes	No	No	No	No	Not specified	No
Immediate Mileage Increase	Yes	No	No	Not specified	No	Possible with 87 Octane	No
Immediate Friction Decrease	Yes	No	No	Yes	No	No	No
Immediate Ping & Knock Decrease	Yes	No	No	No	No	Yes at high concentration	No
Immediate Smoke Decrease	Yes	No	No	No	No	No	No
Fuel System Lubricant	Yes	Yes	Yes	Yes	Not specified	No	Not specified
Injector Cleaner Booster	Yes	To be used alone	To be used alone	To be used alone	To be used alone	No	To be used alone
Safe for Continuous Use	Yes	Not recommended	Not recommended	Yes	Yes	Not specified	Not recommended
Can Use with Cleaners	Yes	No	No	No	No	No	No
Safe for Carburetors	Yes	Yes	Yes	Yes	Yes	Yes	Not specified
Treats Diesel and All Grades of Gasoline	Yes	Not specified	Not specified	Not specified	Not specified	No	Not specified
Continuous Use in 2-cycle Engines	Yes	No	No	Not specified	Yes	No	No
Continuous Use All Small Engines	Yes	No	No	Not specified	Yes	No	No
No Harm to Emission System	Yes	Not specified	Not specified	Not specified	Yes	Not specified	Yes
Contains only Pure Hydrocarbon	Yes	Not specified	No	Not specified	Not specified	No	No
Contains Powerful Detergent	Yes	Not specified	Yes	Implied	Implied	No	Yes
Contains Alcohol	No	No	Not specified	Not specified	Not specified	Yes	No
Contains Benzene Molety	No	No	Yes	Not specified	Not specified	Not specified	Not specified
Dissolves in Water	No	Not specified	Not specified	Not specified	Not specified	Yes	Yes
Treatments per package	5	1	1	Variable	1	1/2	1
Recommended Gasoline Gallons	5-7	10-20	16	15-100	16	11 to 22	Up to 21
Frequency of Treatment	Continuous	Every 2,000 to 5,000 miles	Every 3,000 miles	Continuous	Continuous	Not specified	Every 4,000 miles