Express 4500 V8-6.6L DSL Turbo (2009)
Engine Oil: Fluid Type Specifications
WHAT KIND OF ENGINE OIL TO USE
LOOK FOR THESE THINGS:
Oils designated as API CJ-4 are required for your vehicle. The CJ-4 designation can appear either alone or in combination with other American
Petroleum Institute (API) designations, such as API CJ-4/SL. These letters show API levels of quality.
SAE 15W-40 is best for your vehicle. When it is very cold, below 0°F (-18°C), you should use SAE 5W-40 to improve cold starting.
These numbers on the oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 10W-30, SAE 10W-40, or SAE 20W-50.
NOTICE: Use only engine oils that have the designation CJ-4 for the diesel engine. Failure to use the recommended oil can result in engine damage not
covered by your warranty.
ENGINE OIL ADDITIVES ENGINE OIL FLUSHES
Do not add anything to the oil. The recommended oils with the API service symbol are all you need for good performance and engine protection. Engine
oil flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
