Conversely, post-1980s vehicles often require API SL, SM, or SN rated oils that specifically limit zinc content to protect the catalytic converter. This chemical reaction is what makes it so vital for engines with flat tappet camshafts, which rely entirely on this film for protection.
Understanding API Specifications for Motor Oil With Zinc
Furthermore, while the additive protects the engine, it can contribute to higher phosphorus levels in wastewater treatment facilities. This results in a more stable viscosity and maintains its lubricating properties for a longer duration.
Extended Drain Intervals and Oil Life Engines utilizing motor oil with zinc often experience longer periods of reliable service before requiring an oil change. This compound, often referred to as ZDDP or zinc dialkyldithiophosphate, creates a protective layer on metal surfaces to prevent friction and scoring.
Understanding API Specifications for Motor Oil With Zinc
Performance Benefits for High-Revving Engines For high-revving applications, such as those found in racing or modified street cars, zinc additives provide an extra margin of safety. Choosing the wrong type can compromise your emissions system and negate the benefits of advanced engine design.
More About Motor oil with zinc
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