It contains the high levels of ZDDP (Zinc) necessary to protect flat tappet cams, lifters, and pushrods, Provides excellent thermal stability in case of overheating, Oil contains special Lucas additives that protect against rust, corrosion, and dry starts associated with long periods of non-use, Ideal for muscle, showroom, classic and trophy cars., Engineered to provide a thicker additive film for maximum protection even under the most severe conditions.