The Bajaj Pulsar NS 160 requires approximately 1.2 liters of engine oil for a complete oil change. However, it's essential to consult the owner's manual or manufacturer's recommendations for the accurate oil capacity and specifications. The manual will provide you with the specific information regarding the oil type, grade, and capacity required for your Pulsar NS 160 motorcycle. Following the recommended oil capacity and using the correct type of oil is crucial for maintaining the engine's performance and longevity.