Dura Lube® is free from Teflon® (PTFE), silicone, graphite, molybdenum, lead, and other potentially harmful substrates. It is non-corrosive to metal and does not typically void warranties.

It is unlawful for companies to void warranties or deny coverage solely because an aftermarket product was used. Please refer to the Federal Trade Commission’s support of the Magnuson-Moss Warranty Act. The manufacturer or dealer must demonstrate that the aftermarket or recycled part directly caused the need for repairs before denying the warranty claim.

Should you not be satisfied with any Dura Lube® product, we offer a comprehensive 100% money-back guarantee. Our Engine Treatment has undergone rigorous testing against our competitors by a reputable independent third-party laboratory accredited by ASTM.