Can using Prolong products void my vehicle manufacturers warranty?
No, the use of Prolong products will not void manufacturers’ warranties. Vehicle manufacturers are allowed to specify the motor oil grade and API (American Petroleum Institute) service requirements necessary to validate their engine warranty. Prolong Engine Treatment in no way alters the grade or other specifications of either petroleum based or synthetic motor oils, and Prolong Super Lubricants encourages drivers to follow the manufacturer’s recommended service schedules. Prolong Extreme Pressure Multi-Purpose Grease Exceeds NLGI GC/LB (ASTM D 4950) standards. Vehicle Manufacturers are not allowed to specify that a particular brand of product be used with their equipment to qualify a warranty unless they provide that product for free.