What role does engine oil quality and type play in fuel efficiency?

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What role does engine oil quality and type play in fuel efficiency?

Some Prius owners report that using the wrong engine oil grade negatively affects mileage. What is the recommended engine oil type for the Prius in Pakistan, and how does it influence fuel consumption?

Sirat Ul Jinan asked on 14 Feb 2025 11:53:13 am

1 Answer

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Car Mechanic Expert - on 14 Feb 2025 11:56:01 am

Engine oil plays a significant role in how efficiently the engine runs. Using the wrong oil grade o r low-quality oil can cause the engine to work harder, leading to increased fuel consumption.

The recommended oil for the Toyota Prius in Pakistan is 0W-20 full synthetic motor oil. Using a lower viscosity oil, such as 5W-30, o r low-quality oil can result in more friction in the engine, increasing fuel consumption.
High-quality synthetic oil helps reduce friction, improve engine efficiency, and maintain fuel economy over time.