Non-corrosive to copper and lead, the Naugalube 810 is a sulfated ash-free anti-wear additive that contains no chlorine, nitrogen or sulfur, and 0.05 wt.% or less phosphorus. Its performance has been proven in rigorous wear and no-harm testing, including four-ball and Cameron-Plint engine-oil wear evaluations, Cameron-Plint friction-testing, Cu/Pb corrosion evaluation, and additive compatibility and thermal behavior tests. Typical treatment rates range from 0.5 wt.% to 1.0 wt.%.