ENGINE MAINTENANCE - Engine Oil Specifications oil for engine break-in that will be used during normal operation. precise amounts of additives blended into the lubricating oil to meet stringent performance requirements. These oils meet performance characteristics that conform to the lubricant industry standards and are sufficient protection when used according to the recommendations. Aftermarket lubricating oil additives are not necessary to enhance engine oil performance and may in some cases reduce the oil's capability to protect the engine. 2 PACCAR does not recommend the use of aftermarket oil additives. Today's high- quality engine lubricating oils are very sophisticated.
Most oils already contain Aftermarket Oil Additive Usage Engine Oil Specifications Engine oil system specifications. Engine Oil Specifications for PACCAR MX-11 high quality lubricating oil as indicated in the Engine Lubricating Oil Recommendations and Specifications section. Perform these maintenance procedures according to the Preventive Maintenance Schedule. Engine Lubrication and Filter Intervals Oil change intervals for normal and severe duty applications. Oil drain interval recommendations are based on vehicle application or engine duty cycle.
PACCAR recommends the use of 40 Y53-1166-1G1 (08/2018) Oil Pressure at Low Idle (min allowable) 650 -50/+100 rpm 14.5 psi at 239°F (100 kPa at 115°C) oil temperature At Road Speed 900-1300 rpm (min allowable) 22-33 psi at 239°F (150 -230 kPa at 115°C) oil temperature At Road Speed 1300-2100 rpm (min allowable) 33 psi at 239°F (230 kPa at 115°C) oil temperature Regulated Oil Pressure (nominal) 37 psi at 239°F (260 kPa at 115°C) oil temperature Total System Capacity (oil pan and new oil filters) 38.5 U.S. qts (36.5 liters)