WARNING, once again some original equipment manufacturers (OEMs) have attempted to revive old fears about warranty coverage in an attempt to increase sales of their own, typically more-expensive, OEM-Branded Program Oils.
You can also be confident that using AMSOIL synthetic lubricants or practicing extended oil change drain intervals will not void your new vehicle or equipment manufacturer's warranty.
In fact, it is against Federal Law (The Magnuson-Moss Warranty Act) for an original equipment manufacturer (OEM) to deny warranty coverage based solely on the brand of lubricant used.
The Warranty Secure symbol informs consumers of this fact. Using AMSOIL synthetic lubricants in place of OEM-Branded Program Lubricants, or practicing extended oil change drain intervals when using AMSOIL lubricants, does not void new vehicle or equipment manufacturer warranties.
The Magnuson-Moss Warranty Act (1975) makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket or recycled part... The manufacturer or dealer must show that the aftermarket or recycled part caused the need for repairs before denying warranty coverage.