This unique formula is recommended for use in all manual transmissions gearboxes transfer cases or differentials with either synthetic or petroleum based gear oils. MPT Gear Treatment clings to internal gearbox parts thus reducing friction and wear. The PTFE particles are so small they easily flow through manual transmissions and gearboxes without clogging or being trapped. The formula with regular use will result in increased gearbox life. Smoother and quieter operation will result in increased efficiency for better fuel mileage easier shifting more power and better performance. Use MPT Gear Treatment at every gear oil change. Add one ounce per quart of gear oil for smoother quieter operation. MPT Gear Treatment will not void new car warranties.