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  2. 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.

  3. Extreme pressure additive - Wikipedia

    en.wikipedia.org/wiki/Extreme_pressure_additive

    Oil-soluble organophosphates, with or without zinc, have excellent high-pressure and antiwear properties, and provide corrosion protection especially in presence of chlorinated hydrocarbons. Zinc dialkyldithiophosphates (ZDDP) start decomposing at 130-170 °C, while the activation temperature of tricresyl phosphate (TCP) typically exceeds 200 °C.

  4. 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]

  5. Antiwear additive - Wikipedia

    en.wikipedia.org/wiki/Antiwear_additive

    zinc dialkyl dithio phosphate (ZDDP), probably the most widely used [2] in formulated engine oils, also acts as a corrosion inhibitor and antioxidant Tricresyl phosphate (TCP), used for high-temperature operation, often used as an AW and EP additive in turbine engine lubricants, and also in some crankcase oils and hydraulic fluids

  6. Oil additive - Wikipedia

    en.wikipedia.org/wiki/Oil_additive

    Although PTFE has been called "the slickest substance known to man", [15] [16] it would hardly do any good if it remains in the oil filter. Some mass-market engine oil additives, notably the ones containing PTFE/Teflon (e.g. Slick 50) [17] and chlorinated paraffins (e.g. Dura Lube), [18] caused a major backlash by consumers; the U.S. Federal ...

  7. Nelson complexity index - Wikipedia

    en.wikipedia.org/wiki/Nelson_complexity_index

    Flows in a very complex oil refinery. The Nelson complexity index (NCI) is a measure to compare the secondary conversion capacity of a petroleum refinery with the primary distillation capacity. [1] The index provides an easy metric for quantifying and ranking the complexity of various refineries and units. [2]