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2. Synthetic oil - Wikipedia

   en.wikipedia.org/wiki/Synthetic_oil

   A sample of synthetic motor oil Synthetic oil is a lubricant consisting of chemical compounds that are artificially modified or synthesised. Synthetic lubricants can be manufactured using chemically modified petroleum components rather than whole crude oil , but can also be synthesized from other raw materials.

3. Shell Rotella - Wikipedia

   en.wikipedia.org/wiki/Shell_Rotella

   Multigrade synthetic oil—in SAE 5W-40 and 15w-40 viscosity ranges [3] Single grade conventional oil—in SAE 20, 30, 40 and 50; Synthetic blend oil; Shell is marketing their new CJ-4/SM oil as "Triple Protection," meaning it provides enhanced qualities for engine wear, soot control and engine cleanliness.

4. DN factor - Wikipedia

   en.wikipedia.org/wiki/DN_Factor

   For most types of bearings, there are actually two required measurements: the inner diameter and outer diameter. In such cases, D = (A+B)/2, where A = inner diameter and B = outer diameter. The sum of these two values is then divided by 2 to obtain the median diameter, sometimes also called pitch diameter. [4] [citation needed] N = bearing speed.

5. Benchmark (crude oil) - Wikipedia

   en.wikipedia.org/wiki/Benchmark_(crude_oil)

   Energy Intelligence Group publishes a handbook which identified 195 major crude streams or blends in its 2011 edition. [1] [2] Benchmarks are used because there are many different varieties and grades of crude oil. [3] Using benchmarks makes referencing types of oil easier for sellers and buyers.

6. Petroleum refining processes - Wikipedia

   en.wikipedia.org/wiki/Petroleum_refining_processes

   Petroleum refining processes are the chemical engineering processes and other facilities used in petroleum refineries (also referred to as oil refineries) to transform crude oil into useful products such as liquefied petroleum gas (LPG), gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils. [1] [2] [3]

7. Motor oil - Wikipedia

   en.wikipedia.org/wiki/Motor_oil

   In small two-stroke engines, the oil may be pre-mixed with the gasoline or fuel, often in a rich gasoline: oil ratio of 25:1, 40:1 or 50:1, and burned in use along with the gasoline. Larger two-stroke engines used in boats and motorcycles may have a more economical oil injection system rather than oil pre-mixed into the gasoline.

8. 15 Foods You Should Buy When They're on Sale - AOL

   www.aol.com/15-foods-buy-theyre-sale-200000635.html

   Groceries are eating up more than just your time — about $270 per week for the average American household. That’s $1,080 a month or a gut-punching $14,051 a year. Yikes. But before you start ...

9. Drilling fluid - Wikipedia

   en.wikipedia.org/wiki/Drilling_fluid

   Liquid fluids are composed of natural and synthetic material in a mixed state, [1] which can be of two types: [2] Aqueous; [3] usually with substances added that control viscosity, along with lubricants, for the inhibition of corrosive inhibitors, salts, and pH-control agents. [1] Oil; which could be usually using hydrocarbon oil, [1]