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  2. List of U.S. states by standard octane ratings - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._states_by...

    All states require gas pumps to be labeled with the correct octane level and nearly all states do regular testing to make sure gas stations are in compliance. A minimum 82 octane fuel is recommended for most vehicles produced since 1984. Older cars with carburetors could operate with lower octane fuel at higher elevations. Regardless of ...

  3. Hydrogen fuel enhancement - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_fuel_enhancement

    Hydrogen fuel enhancement from electrolysis (using automotive alternators) has been promoted for use with gasoline-powered and diesel trucks, [14] [15] [16] although electrolysis-based designs have repeatedly failed efficiency tests and contradict widely accepted laws of thermodynamics (i.e. conservation of energy).

  4. Category : Motor vehicle manufacturers based in Texas

    en.wikipedia.org/wiki/Category:Motor_vehicle...

    Pages in category "Motor vehicle manufacturers based in Texas" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes .

  5. Motor vehicle type approval - Wikipedia

    en.wikipedia.org/wiki/Motor_vehicle_type_approval

    Motor vehicle type approval is the method by which motor vehicles, vehicle trailers and systems, components and separate technical units intended for such vehicles achieve type approval in the European Union (EU) or in other UN-ECE member states. There is no EU approval body: authorized approval bodies of member states are responsible for type ...

  6. Texas Department of Motor Vehicles - Wikipedia

    en.wikipedia.org/wiki/Texas_Department_of_Motor...

    Texas Department of Motor Vehicles Building 1, the headquarters. The Texas Department of Motor Vehicles (TxDMV) is a state agency of Texas, headquartered in Austin.The agency handles vehicle registration and titling, authorizes operating authorities of motor carriers, and gives grants to law enforcement agencies to increase public awareness about automobile theft and to reduce automobile theft.

  7. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Vehicle inspection in the United States - Wikipedia

    en.wikipedia.org/wiki/Vehicle_inspection_in_the...

    Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.

  9. Two- and four-stroke engines - Wikipedia

    en.wikipedia.org/wiki/Two-_and_four-stroke_engines

    The two crankshafts are connected with a special transmission that rotates the four-stroke crankshaft at twice the speed of the two stroke crankshaft. In the M4+2, the advantages of both engines being connected are obvious; the pistons of the engine working in one combustion cylinder are set opposite to each other but in different modes ...