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

Whatever car you have, if it has some miles on it, Risoline is a good additive for your high mileage engine. It works especially good for the gm vortec series of engines. They all have lifter tap. This will help keep those lifters pumped up at high miles. Good stuff and it actually works.