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2. API-TC - Wikipedia

   en.wikipedia.org/wiki/API-TC

   API TC is a certification for two-stroke oils, awarded by the American Petroleum Institute. It is given after the product passes through stringent tests that determine the level of detergent performance, dispersion, and anti-oxidation. It is the only remaining, not revoked classification of the API Two-Cycle motor oil specifications (TA, TB, TC ...

3. Total-loss oiling system - Wikipedia

   en.wikipedia.org/wiki/Total-loss_oiling_system

   Silkolene 2-stroke oil was directly injected into the inlet tracts and onto the main roller bearings. The oil that entered the combustion chamber lubricated the rotor tips and was then total-loss, but the oil that fed the bearings became a mist within the rotor-cooling air, and around 30% [ 2 ] of that oil was recovered and returned to the ...

4. SAE J300 - Wikipedia

   en.wikipedia.org/wiki/SAE_J300

   The oil fails the test at a particular temperature if the oil is too viscous. The grade of the oil is that associated with the coldest temperature at which the oil passes the test. For example, if an oil passes at the specified temperatures for 10W and 5W, but fails at the 0W temperature, the oil is grade 5W. It cannot be labeled 0W or 10W.

5. Alchemical symbol - Wikipedia

   en.wikipedia.org/wiki/Alchemical_symbol

   The tradition remains today with the name of the element mercury, where chemists decided the planetary name was preferable to common names like "quicksilver", and in a few archaic terms such as lunar caustic (silver nitrate) and saturnism (lead poisoning). [4] [5] Lead, corresponding with Saturn ♄ Tin, corresponding with Jupiter ♃ ()

6. Chief Oil & Gas - Wikipedia

   en.wikipedia.org/wiki/Chief_Oil_&_Gas

   [3] [4] Chief began drilling in the Marcellus Formation in 2007. [5] In August 2008, the company sold assets to Quicksilver Resources. [6] In September 2009, the company entered into a joint venture with Enerplus for development in the Marcellus. By that time, the company had drilled 31 wells in the formation. [5]

7. Two- and four-stroke engines - Wikipedia

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

   The M4+2 engine has a four-stroke piston and a two-stroke piston. The shaft of the four-stroke piston rotates twice as fast as the shaft of the two-stroke piston, and the two-stroke part always runs at half speed. This ensures that both parts work optimally regarding fuel consumption at all times.