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  2. Motor oil - Wikipedia

    en.wikipedia.org/wiki/Motor_oil

    Phosphorus is a key anti-wear component in motor oil and is usually found in motor oil in the form of zinc dithiophosphate (ZDDP). Each new API category has placed successively lower phosphorus and zinc limits, and thus has created a controversial issue of obsolescent oils needed for older engines, especially engines with sliding (flat/cleave ...

  3. Shell Rotella - Wikipedia

    en.wikipedia.org/wiki/Shell_Rotella

    Shell Rotella is a line of heavy-duty engine lubrication products produced by Shell plc.The line includes engine oils, gear oils and coolants. The oil carries both the American Petroleum Institute (API) diesel "C" rating as well as the API gasoline engine "S" rating.

  4. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. ... Chart. Z Symbol Name Density [a ...

  5. Zinc - Wikipedia

    en.wikipedia.org/wiki/Zinc

    Zinc is a chemical element with the symbol Zn and ... Price of Zinc Percentage of zinc output in ... is used as an anti-wear additive for metal parts in engine oil. [162]

  6. Zinc dithiophosphate - Wikipedia

    en.wikipedia.org/wiki/Zinc_dithiophosphate

    Zinc dialkyldithiophosphates (often referred to as ZDDP) are a family of coordination compounds developed in the 1940s that feature zinc bound to the anion of a dialkyldithiophosphoric salt (e.g., ammonium diethyl dithiophosphate). [1]

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