Engine Oil CCS (Cold Cranking Simulator) Viscosity Tester

Low-temperature dynamic viscosity (CCS) is one of the important indexes of multigrade internal combustion engine (ICE) oil, a measure of the internal friction force measured under the condition of low temperature and high shear rate, and a main index for evaluating the low-temperature start-up performance of internal combustion engine oil.

In Winter, The termperature maybe below 0℃ in most parts of our country. After the vehicle is parked for a long time at low temperature, when the vehicle starts, if the engine oil can not reach the part that need lubricating in time, which will increase the engine running resistance, and the moving parts are in a state of friction, causing wear and tear.

Cold Cranking Simulator (CCS) simulates the working condition of engine cylinder liner and piston under low termperature. If the CCS value of engine oil is too large, the resistance moment of crankshaft rotation is too large, which may lead to engine start failure; Or the engine starts, but the engine parts wear worse because lack of effective lubrication (viscosity lubricating oil is too large, it is difficult to form effective lubrication).

Generally, A high CCS number means thick, sluggish cold oil. This can prevent your engine from starting on a cold morning or damage it during startup, even if it does turn over. Good cold-starting oils should have a low CCS value.

At the same low temperature, the smaller the CCS value, the better the cold starting performance of the oil.

Testing Standards:

Chinese Standards - GB/T6538 Determination of apparent viscosity of engine oils-Using the cold-cranking simulator

ASTM Standard:

ASTM D5293 - Standard Test Method for Apparent Viscosity of Engine Oils and Base Stocks Between –10 °C and –35 °C Using Cold-Cranking Simulator