| Question 1: The same SAE system for designating motor oil viscosity also applies to ________. | |||
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| Question 2: Groups I and II are commonly referred to as ________, group III is typically referred to as synthetic (except in Germany and Japan, where they must not be called synthetic) and group IV is a synthetic oil. | |||
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| Question 3: [6] One of the most important properties of motor oil in maintaining a lubricating film between moving parts is its ________. | |||
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| Question 4: Group I base stocks are composed of ________ petroleum which is further refined with solvent extraction processes to improve certain properties such as oxidation resistance and to remove wax. | |||
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| Question 5: There are six ________ service designations which are current: CJ-4, CI-4, CH-4, CG-4, CF-2, and CF. | |||
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| Question 6: Motor oil, or engine oil, is an oil used for lubrication of various ________. | |||
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| Question 7: In addition to the 2-cycle oil used if they have gasoline engines, ________ also separately use "bar and chain oil" for lubricating and cooling the surfaces where the cutting chain moves around the bar. | |||
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| Question 8: Motor oils with higher ________ indices thin less at these higher temperatures. | |||
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| Question 9: Group II base stocks are composed of ________ petroleum that has been hydrocracked to further refine and purify it. | |||
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| Question 10: The ________ (SAE) has established a numerical code system for grading motor oils according to their viscosity characteristics. | |||
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