Excessive oil burning and exhaust smoking can appear in older worn engines. Oil burning and smoking occurs when motor oil enters the combustion chamber and is burned along with fuel. This condition known as oil blow-by often results when friction and metal-to-metal contact have worn parts and created gaps between the cylinder walls piston rings and valve guide seals. STP Smoke Treatment is specifically designed to reduce these problems. Instructions: Add one bottle STP Smoke Treatment at or between oil changes. Mixes with regular and synthetic motor oils.

Without cleaning, deposits can lead to hard starts, lost acceleration and rough idling. STP Fuel Injector & Carburetor Treatment is specially formulated to maintain clean performance of fuel injectors and carburetors by helping to prevent the accumulation of deposits. Its made with jet fuel, a high-quality carrier of active ingredients. Fights deposit buildup and helps keep fuel injectors and carburetors clean in vehicles with over 75,000 miles. Save gas by cleaning dirty injectors. Reduce friction. Prevent deposit buildup. Each 5.25 fl. oz. bottle treats up to 21 gallons of gasoline

Super Concentrated Fuel Injector Cleaner will unclog dirty fuel injectors. STP helps engines run better. The advanced cleaning technology saves gas and lowers emissions by cleaning dirty fuel injectors. It also helps to restore power and acceleration. Pour contents into gas tank before or after fueling. Safe to use in any gasoline engine. One bottle treats up to 21 gallons of gasoline. STP Super Concentrated Fuel Injector Cleaner. Contains concentrated detergents. Helps dissolve and remove harmful carbon, gum and varnish deposits on fuel injectors. STP fuel cleaner is made with jet fuel. Improves the performance of your car

For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care. This two-in-one formula boosts octane and cleans the fuel intake system to restore lost performance. Use regularly when you fill up your tank to help restore power and acceleration, boost octane and reduce knocking and pinging. STP Octane Booster is compatible with cap?less gas systems. STP Octane Booster:. Helps restore horsepower by removing deposits and cleaning the fuel intake system. Helps boosts octane. Helps reduce knocking and pinging. Helps restore performance. Barely street legal formula restores power and acceleration. Use regularly when you fill up your tank; 5.25 fl. oz. bottle treats up to 21 gallons of gasoline

For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care. This two-in-one formula boosts octane and cleans the fuel intake system to restore lost performance. Use regularly when you fill up your tank to help restore power and acceleration, boost octane and reduce knocking and pinging. STP Octane Booster is compatible with cap?less gas systems. STP Octane Booster: Helps restore horsepower by removing deposits and cleaning the fuel intake system. Helps boosts octane. Helps reduce knocking and pinging. Helps restore performance. Barely street legal formula restores power and acceleration. Use regularly when you fill up your tank; 5.25 fl. oz. bottle treats up to 21 gallons of gasoline

This STP Complete Fuel System Cleaner contains the highest level of detergents of any STP formula. It helps clean your entire fuel system to restore its optimum operating condition. The advanced formula helps clean fuel injectors, carburetors, intake valves and ports, combustion chambers, cylinder heads and piston tops. It contains jet fuel, a high-quality carrier of active ingredients. STP Complete Fuel System Cleaner, 5.25 oz. Cleans your entire fuel system. Restores its optimum operating condition. Helps clean fuel injectors, carburetors, intake valves and more. Contains jet fuel

STP Gas Treatment improves the quality of gas by adding powerful cleaning agents that help fight the accumulation of harmful carbon, gum and varnish deposits in the fuel system that can reduce performance. Also engineered to remove water, which can lead to fuel line freeze. This product is made with jet fuel, a high-quality carrier of active ingredients. Improves the quality of gas and helps keep fuel injectors and intake valves clean with regular use. Save gas by keeping fuel intake system clean. Prevent fuel line freeze. Prevent deposit buildup. 5.25 fluid ounce bottle treats up to 21 gallons of gasoline

STP Oil Treatment fights friction to help protect against engine wear. This high-viscosity formula, complete with anti-wear agent ZDDP (Zinc Dialkyl Dithiophosphate), is specifically formulated to help fight metal-to-metal friction and helps reduce oil consumption.. Contains zinc anti-wear agent ZDDP that fights metal-to-metal friction. Reduces oil consumption. Lubricates moving engine parts by providing a thicker cushion between moving engine parts. Scientifically engineered for Conventional or Synthetic Oils. High viscosity formula can be used for all cars, light trucks and SUV's