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  2. Fuel dye - Wikipedia

    en.wikipedia.org/wiki/Fuel_dye

    Fuel pumps in Ireland, with green gas oil and red kerosene, and notices that it is an offence to use marked fuels in a motor vehicle.. After August 2002, all European Union countries became obliged to add about 6 mg/L (0.034 oz/bbl) of Solvent Yellow 124, a dye with structure similar to Solvent Yellow 56, to heating fuel.

  3. Color of chemicals - Wikipedia

    en.wikipedia.org/wiki/Color_of_chemicals

    pale blue Ozone: O 3 pale blue Fluorine: F 2 pale yellow Chlorine: Cl 2 greenish yellow Bromine: Br 2 red/brown Iodine: I 2 dark purple Chlorine dioxide: ClO 2 intense yellow Dichlorine monoxide: Cl 2 O brown/yellow Nitrogen dioxide: NO 2 dark brown Trifluoronitrosomethane: CF 3 NO deep blue Diazomethane: CH 2 N 2 yellow

  4. Pipe marking - Wikipedia

    en.wikipedia.org/wiki/Pipe_marking

    Gas Background Color Text Color Carbon Dioxide: Gray: Black or White Helium: Brown: White Medical Air: Yellow: Black Oxygen: Green: White [e] Oxygen/Carbon Mixtures: Green: White Nitrogen: Black: White Nitrous Oxide: Blue: White Waste Anesthetic Gas Disposal: Purple: White Medical Surgical Vacuum: White: Black Non-Medical Air: Yellow/White ...

  5. Here’s What Those Colored Circles on Food Packages Actually Mean

    www.aol.com/those-colored-circles-food-packages...

    They compare the color to boxes printed around the world to ensure consistent brand colors,” Schiraldi explained. “Most printers only use four colors: cyan (blue-green), yellow, magenta and black.

  6. Why some Coca-Cola bottles have a yellow cap

    www.aol.com/news/why-coca-cola-bottles-yellow...

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  8. Flexible-fuel vehicles in the United States - Wikipedia

    en.wikipedia.org/wiki/Flexible-fuel_vehicles_in...

    Top left: a small sticker in the back of the fuel filler door. Bottom left: the bright yellow gas cap used in newer models. E85 Flexfuel badging used in newer models from Chrysler (top right), Ford (middle right) and GM (bottom right). A 2005 survey found that 68% of American flex-fuel car owners were not aware they owned an E85 flex.

  9. Check engine light - Wikipedia

    en.wikipedia.org/wiki/Check_engine_light

    A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system used to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).