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The cold-cranking simulator (CCS) is a device used to determine the low temperature performance of lubricants, when starting a cold engine (i.e. cold-cranking). In this condition, the only energy available to turn the engine comes from the starter motor and the battery, and it has been widely assumed that the system acts as a constant power viscometer. The use of this device for this purpose is standardized as ASTM D5293.[1]
- ^ ASTM D5293-17a, Standard Test Method for Apparent Viscosity of Engine Oils and Base Stocks Between –10 °C and –35 °C Using Cold-Cranking Simulator. West Conshohocken, PA: ASTM International. 2017. doi:10.1520/D5293-17A.