The engine oil and coolant of National VI crane must be selected from the oil that meets National VI standards.

SAIC-Weichai series National VI engines should use oil that meets the GB11122 standard, CK-4 and above grades, and antifreeze that meets the GB29743 standard. SINOTRUK MAN series National VI engines should use the engine oil specified by China National Heavy Duty Truck Q/ZZ 21037. Q /ZZ 21007-1 type coolant oil and coolant should be selected according to the ambient temperature.

Inferior engine oil and coolant will cause early internal wear and tear of the engine and affect the engine's aftertreatment system.