Thanks GTO, very well explained.
Finding right, reliable fuel station is one of the most important factor in fuel efficiency. If you get right quantity (if meter is not tampered) and right quality (not adulterated, mixed with naphtha/kerosene etc.) then certainly pure petrol will help us not only in fuel efficiency but also increase life of the car engine
Try to locate COCO (company owned company operated) fuel stations or get tips from autowallahs.
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