Most Indian Petrol Pumps have underground tanks of 20000 litre capacity. There could be a number of such tanks depending on the number of products on offer and the space available underneath the pump area. Fuel stocks are estimated using a dip stick.

What are the contents of diesel? Diesel fuel is made from crude petroleum. Their greater economy is due to the higher energy content per-litre of diesel fuel and the intrinsic efficiency of the diesel engine.