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  2. Exhaust gas recirculation - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_recirculation

    However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR). Cooled EGR components are exposed to repeated, rapid changes in temperatures, which can cause coolant leak and catastrophic engine failure. [9] [10] Unlike spark-ignition engines, diesel engines are not limited by the need for a contiguous ...

  3. MTBE controversy - Wikipedia

    en.wikipedia.org/wiki/MTBE_controversy

    The case began in 2006, when a gasoline tank sprang a leak that was not detected for 34 days. Testing of 120 wells resulted in dangerously high levels of MTBE being found. [ 19 ] Residents were put in danger by the spill, and in order to prevent further health problems, they required bottled water for cooking, drinking, and brushing teeth. [ 20 ]

  4. Corrosion inhibitor - Wikipedia

    en.wikipedia.org/wiki/Corrosion_inhibitor

    Engine oil. Boilers. Volatile amines are added to boiler water to minimize the effects of acid. In some cases, the amines form a protective film on the steel surface and, at the same time, act as an anodic inhibitor. An inhibitor that acts both in a cathodic and anodic manner is termed a mixed inhibitor. Copper surfaces.

  5. List of gasoline additives - Wikipedia

    en.wikipedia.org/wiki/List_of_gasoline_additives

    Acetone is a vaporization additive, mainly used with methanol racing fuel; Butyl rubber (as polyisobutylene succinimide, detergent to prevent fouling of diesel fuel injectors) Ferrous picrate, used in diesel fuel to increase fuel conversion efficiency and reduce emissions; Two-stroke oil, for lubrication of small engines reliant on crankcase ...

  6. Crankcase ventilation system - Wikipedia

    en.wikipedia.org/wiki/Crankcase_ventilation_system

    These blow-by gases, if not ventilated, inevitably condense and combine with the oil vapor present in the crankcase, forming oil sludge. Excessive crankcase pressure can furthermore lead to engine oil leaks past the crankshaft seals and other engine seals and gaskets. Therefore, it becomes imperative that a crankcase ventilation system be used.

  7. Marvel Mystery Oil - Wikipedia

    en.wikipedia.org/wiki/Marvel_Mystery_Oil

    Marvel Mystery Oil logo. Marvel Mystery Oil is an automotive product of the American Marvel Oil Company, [1] founded by Burt Pierce in 1923. [2] It is used as a fuel additive and oil additive, purportedly to function as a corrosion inhibitor, penetrating oil, transmission leak stopper and seal relubricator, despite a lack of scientific evidence supporting such claims.

  8. Diesel exhaust fluid - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust_fluid

    Typically, the frozen DEF is melted by heat from the engine, e.g. engine coolant passing through the DEF tank, governed by a thermostatic coolant control valve. This method may take significant time before the SCR exhaust cleaning system is fully operational, often up to an hour. [4]

  9. Methylcyclopentadienyl manganese tricarbonyl - Wikipedia

    en.wikipedia.org/wiki/Methylcyclopentadienyl...

    Manganese compounds have, in general, very low toxicity, but their combustion products still irreversibly foul catalytic converters. Opposition from automobile manufacturers and some areas of the scientific community has reportedly prompted oil companies to stop voluntarily the usage of MMT in some of their countries of operation.

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