STP® HEAVY DUTY ENGINE DEGREASER is a proven blend of powerful grease stripping and metal cleaning solvents that cleans your engine safely. It is designed to penetrate and dissolve heavy caked-on grease and grime to give the engine a professional clean.

• Run the engine for 5 minutes till it gets warm.
• Stop the engine and cover all the electrical parts completely so they cannot get affected by water.
• Spray a sufficient amount of the product on all the external parts of the engine and keep your distance from the car's external paint, leave the product for about 10 minutes until it removes all the grease and dirt.
• Spray the engine with the least possible amount of water to wash off the product and all the grease and dirt residues, stay away from all the electrical parts.  
• Dry out the engine with compressed air, remove the covers used to isolate the electrical devices.