tips for filling petrol and diesel save fuel tips

I haven't verified this but logically it seems correct.

Some tips for filling petrol and diesel: -

1. Only buy or fill up your car or bike during early morning, when the ground temperature is still cold.
Remember that all service stations have their storage tanks underground. . The colder the ground, the more dense the fuel.When it gets warmer, petrol expands. So, buying in the afternoon or in the evening, your liter is not exactly a liter.In the petroleum business, the specific gravity and the temperature play an important role. 1 degree rise in temperature is a big deal for this business. But the service stations do not have temperature compensation at the pumps.

2.When you are filling up do not squeeze the trigger of the nozzle to a fast mode.
If you look you will see that the trigger has three (3) stages; low, middle and high. In slow mode you should be pumping on low speed,
Thereby minimizing the vapors that are created while you are pumping. All hoses at the pump have a vapor return. If you are pumping on the fast
rate, some of the liquid that goes into your tank becomes vapor. Those vapors are being sucked up and back into the underground storage tank
so you're getting less worth for your money.

3.One of the most important tips is to fill up when your tank is HALF FULL.
The reason for this is, the more fuel you have in you tank, the less air occupying its empty space. Petrol evaporates faster than you can
imagine. Petroleum storage tanks have an internal floating roof. This roof serves as zero clearance between petrol and the atmosphere, so it minimizes the
evaporation. Unlike Service Stations, here where I work, every truck that we load is temperature compensated so that every liter is actually
the exact amount.

4. If there is a fuel truck pumping into storage tanks when you stop to buy, DO NOT FILL UP.
Most likely the petrol/diesel is
Being stirred up as the fuel is being delivered and you might pick up some dirt that normally settles on the bottom.

Remember to always fill your car when the tank shows 'half'. Always fill up in the
Early morning. Always fill up in slow mode.