Did You Know? Why Filling Your Petrol Tank to the Brim Might Be Costing You Extra

Many of us are not aware that the petrol kiosk pump has a return pipeline (in black). When the petrol tank (in the car) reaches full level, there is a mechanism to trigger off the pump latch, and at the same time, a return valve is opened (at the top of the station) to allow excess petrol to flow back into the sump. However, the return petrol has already passed through the meter, meaning you are essentially donating the petrol back into the system.

Hey, that's new to me.

By the way, we are already paying too high a price for petrol in India. The price a US citizen pays for petrol is:
- Today: $2.225 per gallon (3.76 litres) = Rs. 26.44 per litre
- Yesterday: $2.214 per gallon (3.76 litres) = Rs. 25.31 per litre
- One week ago: $2.170 per gallon (3.76 litres) = Rs. 25.78 per litre
- One month ago: $2.125 per gallon (3.76 litres) = Rs. 25.25 per litre
- One year ago: $1.752 per gallon (3.76 litres) = Rs. 20.82 per litre

In India, according to the new rates announced by the oil marketing companies, petrol is available at:
- Rs. 37.84 a litre in Delhi
- Rs. 40.89 a litre in Kolkata
- Rs. 43.23 a litre in Mumbai
- Rs. 41.25 a litre in Chennai

Now imagine 'donating' back... 😈

Good information indeed. Let me check with my engineers if the return valve is after the delivery nozzle. If this is the case, it's going to be a significant cost-saving factor for all of us. Thank you for the valuable post.

Karunadasp