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Message: <blockquote data-quote="dzuljazz2001" data-source="post: 25229" data-attributes="member: 18107"><p>With Petrol expected to reach $??? :stupid: per litre by end of 2011, these tips that I received from a friend might come in handy. TIPS ON PUMPING PETROL My line of work is in petroleum for about 31 years now, so here are some tricks to get more of your money's worth for every Litre: Only buy or fill up your car in the early 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 buying in the afternoon or in the evening....your litre is not exactly a litre. In the petroleum business, the specific gravity and the temperature of the Petrol, diesel and jet fuel, ethanol and other petroleum products plays an important role. A 1-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 on 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 on the fast rate, some of the liquid that goes to 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.One of the most important tips is to fill up when your Petrol tank is HALF FULL. The reason for this is the more Petrol you have in your tank the less 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, every truck that is loaded is temperature compensated so that every litre is actually the exact amount. Another reminder, 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 line is being stirred up as the Petrol is being delivered, and you might pick up some of the dirt that normally settles on the bottom.</p></blockquote><p></p>

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