Are you rebuilding or repairing your engine, or simply looking for an ultra-durable protectant for under the hood? To give our customers the highest level of protection for all moving engine parts, we developed Max-Tuff synthetic assembly lubricant, a combination of synthetic and traditional mineral oils.

Max-Tuff’s unique molecular structure forms a powerful physical barrier between sensitive load-bearing engine parts, especially piston rod bearings, crankshafts and camshafts.

Royal Purple synthetic assembly lubricant cuts down on abrasion, guards against rust and actually works to impede the natural breakdown of different types of metals.

Give your engine a boost with an extra level of performance.