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Vehicles that require premium fuel, such as Mercedes-Benz, must use premium fuel for the best engine efficiency.
Since engines and vehicles are designed to match the octane rating of high-grade oil, the following are possible only when using high-grade oil.
1) Improved output
2) Improved fuel efficiency
3) Reduce vibration and noise
4) Reduction of exhaust gases
Although premium oil is 13% more expensive than regular oil, test results show a 13% improvement in fuel efficiency, so there is no reason not to use premium oil because the fuel cost per mile driven is the same.