ENGINE MAINTENANCE - Engine Lubricating Oil Recommendations and Specifications PACCAR recommends the use of high- quality SAE 10W-30 API CK-4/CJ-4 heavy- duty engine oil. The primary PACCAR recommendation is for the use of 10W-30 multigrade lubricating oil for normal operation at ambient temperatures above 5°F (-15°C). For ambient temperatures below 5°F (-15°C) SAE 5W-30 may be used, provided it meets API CK-4/CJ-4 oil specifications and biodiesel or biodiesel blended fuel is not used as fuel for the engine. Using a multigrade oil helps improve engine cranking in low-temperature conditions, reduces deposit formation, increases engine durability and increases fuel economy. 1.
If engine is equipped with an active oil pan heater, use before engine start. 2. Initial factory oil fill: API CK-4 10W-30 Engine Lubricating Oil Recommendations and Specifications 2 PACCAR engine oil type, viscosity, and additives. NOTE A major factor in maintaining engine performance and durability is the proper use of quality engine lubricating oils used in conjunction with the appropriate oil drain and filter change intervals. Attempting to extend the oil and filter change interval beyond the manufacturers recommendations may decrease engine life due to factors such as corrosion, deposits, and wear.
See Engine Lubrication and Filter Intervals to determine which oil drain interval to use Any of the oil weights listed in the chart above are acceptable to use as long as the oil meets API CK-4/CJ-4 oil specifications. New Engine Break-In Oils PACCAR does not approve the use of special “break-in” engine lubricating oils for new or rebuilt PACCAR engines. It is recommended to use the same lubricating oil for engine break-in that will be used during normal operation. Engine Oil Viscosity Chart -40 -20 0 20 40 60 80 100 120 140 Temperature °F Aftermarket Oil Additive Usage PACCAR does not recommend the use of aftermarket oil additives.
Today's high- quality engine lubricating oils are very sophisticated. Most oils already contain precise amounts of additives blended into the lubricating oil to meet stringent performance requirements. Y53-1181-1K1 (08/2018) 39 for an application. NOTE 5W40 10W40 15W40 It is the operator’s responsibility to fol- low these recommendations to ensure that the engine warranty is not affect- -40 -30 -2 (1) ed. 5W30 10W30 (2) 0 -10 0 10 20 30 40 50 6 Temperature °C