What is Dithiophosphate used for?

Zinc dialkyl dithiophosphates (ZDDPs) are very effective antiwear agents that are used as machine lubricants (e.g., greases, hydraulic oils, and motor oils), including applications in the automotive industry.

Is ZDDP toxic?

Exposure of workers to ZDDP can cause irritation or corrosion to the eyes and/or skin; release to the environment is toxic to aquatic organisms with potential long-lasting effects.

What is ZDDP stand for?

zinc dialkyldithiophosphate
ZDDP stands for zinc dialkyldithiophosphate. It was developed in the 1940’s and was a common and effective additive in engine oil. By the 1990’s, the ZDDP level in most oil was reduced. This was due to the negative effects it has on the Catalytic Converter and O2 Sensors.

How ZDDP works?

ZDDP protects by creating a film on cams and flat lifter contact points in response to the extreme pressure and heat at the contact point. The film of zinc and phosphorus compounds provides a sacrificial wear surface protecting the base metal of the cam and lifter from wear.

Is zinc a lubricant?

It also is known for its anti-wear properties, which means it can provide an additional lubricant layer, particularly in areas where the oil film is thin due to the operating conditions. The zinc additives are intended to retard the oxidation process to help ensure a longer lubricant life.

Who invented ZDDP?

The first patent identifying ZDDP as a lubricant additive was U.S. Patent 2,261,047 assigned to the Lubri-Zol Corporation (predecessor to The Lubrizol Corporation) and published on October 28, 1941. The inventor of the patent was Peter A. Asseff.

Is ZDDP good for your engine?

No engine harm: Unlike zinc motor oils, a zinc replacement additive will not harm an engine’s catalytic converters or emissions controls, increasing your engine’s longevity.

Should I add zinc to my oil?

Do you need zinc in your car’s oil? It depends on how old your engine is and how you use it. A zinc oil additive will provide improved wear protection for just about any engine, and is an absolute necessity when it comes to older models, especially those with flat-tappet camshafts.

Can you add ZDDP to synthetic oil?

Specially formulated with ZDDP to prevent camshaft and valve train wear in classic cars, hot rods and racing engines. Extreme pressure additives enhance protection in any engine. For use in any oil, conventional or synthetic.