GARAGE-TESTED SEAL OF APPROVAL 

MAX-TUFF 

Max-Tuff is an ultra-tough, synthetic lubricant designed for use in reassembling repaired equipment. Max-Tuff utilizes durable synthetic molecules that adhere to metal surfaces and create an extremely strong barrier between surfaces. This minimizes the possibility of metal-to-metal contact while providing excellent protection against rust and corrosion to both ferrous and nonferrous metals. 

Royal Purple: (888) 382-6300

Joshua Elliott, Glendale, AZ

“I’ve been building engines all my life, and nothing compares to Max-Tuff synthetic assembly lube. I wouldn’t trust my engine with anything else!”

Richard Davenport, Columbus, OH

“I’ve used Royal Purple products for several years. After inspecting my engine components, I was amazed that there was virtually no wear!”