Review on High Mileage Engine Treatment: Restore Your Vehicle'S Performance With Rislone 16.9 Oz! by Brandon Boones

Have a 2009 Toyota Camry Hybrid that developed tappet noise / engine tick several months after changing the piston rings. Used Motor Medic as instructed. Also used Rislone Engine Treatment following the oil change. After several trips around town the engine noise is gone. Works as advertised!