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  2. Motor oil - Wikipedia

    en.wikipedia.org/wiki/Motor_oil

    An oil pump, a vane or gear pump powered by the engine, pumps the oil throughout the engine, including the oil filter. Oil filters can be a full flow or bypass type. In the crankcase of a vehicle engine, motor oil lubricates rotating or sliding surfaces between the crankshaft journal bearings (main bearings and big-end bearings) and rods ...

  3. List of abbreviations in oil and gas exploration and production

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    RRR – reserve replacement ratio RSES – responsible for safety and environment on site RSPP – a publicly-traded oil and gas producer focused on horizontal drilling of multiple stacked pay zones in the oil-rich Permian basin [ citation needed ] [ clarification needed ]

  4. Dimensionless numbers in fluid mechanics - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_numbers_in...

    Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.

  5. Prandtl number - Wikipedia

    en.wikipedia.org/wiki/Prandtl_number

    However, engine oil with its high viscosity and low heat conductivity, has a higher momentum diffusivity as compared to thermal diffusivity. [ 3 ] The Prandtl numbers of gases are about 1, which indicates that both momentum and heat dissipate through the fluid at about the same rate.

  6. Two-stroke oil - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_oil

    The oil is dyed blue to make it easier to recognize in the gasoline. It appears black in this bottle because it is not diluted. Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, or 2-stroke oil) is a special type of motor oil intended for use in crankcase compression two-stroke engines, typical of small gasoline-powered ...

  7. PL-01 - Wikipedia

    en.wikipedia.org/wiki/PL-01

    The PL-01 was a Polish light tank concept created by OBRUM with support from BAE Systems, based on the Swedish CV90120-T light tank. [ 1 ] [ 2 ] The concept vehicle was first unveiled at the International Defence Industry Exhibition in Kielce on 2 September 2013, [ 3 ] but the project was scrapped in 2015.

  8. AOL Mail

    mail.aol.com

    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!

  9. List of Volkswagen Group petrol engines - Wikipedia

    en.wikipedia.org/wiki/List_of_Volkswagen_Group...

    From late 2012, the modified internal engine components were fitted to new replacement engines and new vehicle units by the Volkswagen group engine plants. Another common issue is camshaft timing chain tensioner failure, again in earlier generation 1 models.