STP® ENGINE FLUSH is specially formulated to rapidly dissolve carbon and all the harmful oil deposits formed inside the engine as a result of the combustion process, and high temperatures. These harmful deposits build-up inside the crank shaft oil box of the engine, and on the walls of the engine cylinders. Dissolving these deposits and removing them is very important for the engine efficiency and longevity.

• Add one whole bottle on the old oil (can treat up to 6 L of oil)
• Run the car engine for 15 minutes.
• Stop the engine, dump the old oil and replace it with a new oil.
• You must also change the engine oil filter and replace it with a new one.
• It can be safely used in every oil change and with all kinds of oils.
• It can be used in all gasoline and diesel engines.