Hy-per Lube zinc replacement additive, No. HPZ212, offers a way to keep cams, lifters, and rocker arms safe and eliminate significant wear. The additive allows pressure to be applied to metal-on-metal surfaces without the additive losing its original properties or causing extreme wear to the cams, lifters, and rocker arms. The solution is compatible with all motor oils, including synthetic, and can be used in any vehicle year, make, or model. The additive does not contain heavy metals, reduces cold-start wear after long periods of disuse, and is safe to use with all engines, even those with catalytic converters.