Tips at the Pump

“I'm sending this note to about thirty people. If each of you send it to at least ten more (30 x 10 = 300)... and those 300 send it to at least ten more (300 x 10 = 3,000) and so on, by the time the message reaches the sixth generation of people, we will have reached over THREE MILLION consumers !!!!!!! If those three million get excited and pass this on to ten friends each, then 30 million people will have been contacted!” the message that is going around the Internet gives some amazing tips to save when filling up your tank of gas or petrol .

Only buy or fill up your car or truck early in the morning when the ground temperature is still cold.
Remember that all service stations have their storage tanks buried below ground. The colder the ground the more dense the petrol; when it gets warmer, petrol expands so if 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 of the petrol, diesel, jet fuel, ethanol and other petroleum products plays an important role. A one degree rise in temperature is a big deal for this business. But the service stations do not have temperature compensation at the pumps.

When you're 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. You should be pumping at a low mode, thereby minimizing the vapors that are created while you are pumping. All hoses at the pump have a vapor return. If you are pumping at a 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 value for your money.

One of the most important tips is to fill up when your petrol tank is HALF FULL.
The reason for this is that the more petrol you have in your tank, the less the air occupying its empty space. Petrol evaporates faster than you can imagine. Petrol storage tanks have an internal floating roof. This roof serves as zero clearance between the 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.

If there is a petrol truck pumping into the storage tanks when you stop to buy petrol, DO NOT fill up.
Most likely the petrol is being stirred up as the petrol is being delivered, and you might pick up some of the dirt that normally settles at the bottom.

These are the tips. Whether they help or not is up to you to decide. We can only advice you never to leave the gas or petrol station when the car is empty. In respect to writers wishes, don’t forget to pass the tips on.