King Long XMQ6900 Series, Руководство по эксплуатации

Страница: 111 / 173

Maintenance and service
5-14
Oil quality and specification recommendation
Engine oil
 Prefer using the engine oil whose quality is equivalent to or higher than level CF-4 or CH-4 of
American Petroleum Institute API, or refer to the engine specification.
 Part of engine oil used for lubricating the piston will be burnt out (consumed) during the engine
running. Engine oil must be replaced in certain period because of high temperature effect and the
oil combustion product interfusing in the oil, especially the chemical additive in the oil will cause
"abrasion" of the oil. This kind of abrasion depends on working condition of engine, quality of
fuel and engine oil; therefore there has different oil changing interval. (Recommended oil changing
interval is 12000km.)
Engine oil viscosity
 Since oil viscosity fluctuated with temperature, so the ambient temperature of engine working area
is very important to select viscosity grade (as shown in the figure). When temperature exceed lower
limit, it may decrease cold start capacity of the engine but will not make any damage to the engine.
 Higher sticky engine oil may cause the engine difficult to start, so the ambient temperature of the
engine starting is the main reference for selecting viscosity of the winter engine oil. Selecting
multifunctional engine oil may avoid oil changing caused by temperature fluctuation.
HINT:
Never add any additive to above engine oil and different kinds of oil should be avoided using at
the same time (oil mixture must be the same grade oil and it is recommended to replace in time).