No. To void a warranty the equipment manufacturer must prove that a particular product did damage to an engine. There is nothing in Microlon to damage an engine when properly used. Although many original equipment manufacturers threaten to ‘void the warranty’ if recommended lubricants are not used, none of them will put it in writing. The Microlon CL-100 aircraft engine treatment has been accepted for use in aircraft engines by the FAA since May 1979. In thirty-five years, there has never been a damage claim against any Microlon products.