In an effort to extend the life of catalytic converters the EPA and the OEM engine manufacturers have instructed the motor oil companies to reduce the levels of ZDDP (zinc dialkyldithiophosphate) in the oil. The ZDDP when present in the exhaust gas can coat the catalyst which results in higher emissions and shortens the service life of the catalytic converter. This reduced ZDDP approach works well to protect the catalytic converters but leaves many older and high performance engines without the proper EP (extreme pressure) wear protection they need to protect the cams, liters and rocker arms. Virtually all non-roller cam designed engines are at risk for significant wear problems. Hy-Per Lube Zinc Replacement Additive contains an exclusive Polymer Ester formula, when added to any motor oil, including the new SM rated oils, will provide TWICE the EP wear protection as high content ZDDP motor oils and is also safe for use in all engines even those with catalytic converters. Hy-Per Lube Zinc Replacement Additive will provide maximum wear protection for cams and lifters in flat tappet cam design engines.
A**R
A necessary oil additive
For some reason, oil companies started removing zinc from their oils to prevent damage to catalytic converters. In older engines, and in aircraft engines that don't have catalytic converters in their exhaust systems, the loss of zing adds to unnecessary wear and tear in the engine, particularly during startup. Adding zinc back to oil used in these older engines prolongs their life without any downsides since these older engines don't have catalytic converters in their exhaust. I'm a believer!
Trustpilot
2 weeks ago
1 month ago