myshell Posted November 2, 2011 Share Posted November 2, 2011 Hi everyone, I'm not sure if the enclosed advice applies as much to diesel as petrol but every little helps. With Petrol expected to reach £2 per litre by end of 2011 these tips that I received from a friend might come in handy. TIPS ON PUMPING PETROL I don't know what you guys are paying for petrol.... I am paying up to £1.35 to £1.50 per litre. 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: Here at the Shell Pipeline where I work , we deliver about 4 million litres in a 24-hour period .. One day is diesel the next day is jet fuel and petrol, regular and premium grades. We have 34-storage tanks here with a total capacity of 16,800,000 Litres. Only buy or fill up your car or truck 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 vapours that are created while you are pumping. All hoses at the pump have a vapour return, if you are pumping on the fast rate, some of the liquid that goes to your tank becomes vapour, those vapours 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 where I work, every truck that we load 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 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. Link to comment Share on other sites More sharing options...
vindiboy Posted November 2, 2011 Share Posted November 2, 2011 Well good advice I'm sure but if I had to worry about all that I don't think I would bother to drive at all. 8-) 8-) Link to comment Share on other sites More sharing options...
Guest 1footinthegrave Posted November 2, 2011 Share Posted November 2, 2011 I buy the brand that promises an extra litre of mileage per tankful, kind of brings a warm glow ,an extra 5 miles for my £90 worth, yipeeeeee :-S Link to comment Share on other sites More sharing options...
ips Posted November 3, 2011 Share Posted November 3, 2011 Yep all good advice I am sure and an interesting read about the vapour and the temp having an effect. However with the mileage I do for business I would be filling up literally every day if I only filled up by half. And in the MH on a long run to see daughter in Windsor I would be worried about running out before I got there. Spose it could work for low mileage folk though, but then again if your a low mileage user then there wouldnt be much saving in the grand scheme of things. Link to comment Share on other sites More sharing options...
747 Posted November 3, 2011 Share Posted November 3, 2011 Thanks for that information. I have worked on refineries myself and you are talking sense. Until you mentioned those facts, I never even gave it a thought. :$ Link to comment Share on other sites More sharing options...
Guest JudgeMental Posted November 3, 2011 Share Posted November 3, 2011 On the Politics show at the weekend one pundit was claiming fuel will reach $500 a barrel by 2015...... Link to comment Share on other sites More sharing options...
art338 Posted November 3, 2011 Share Posted November 3, 2011 Myshell, I follow what you say regarding temperature changes and the expansion of liquids but the more dense underground area doesn’t change as quickly as the air above. Even if the morning air is cold the underground area may still be 'warm' from the previous day. Given that at a particular time of day the underground tank will begin to warm again, I might suggest that midday would be the better time to draw fuel. Conversely the large mass of underground material (earth, concrete, metal, soil and fuel) once heated will take a very long time to cool so I see little or no advantage in doing what you say. Laboratory trials may well prove what you are saying but the weather is unpredictable. art Link to comment Share on other sites More sharing options...
BGD Posted November 3, 2011 Share Posted November 3, 2011 Soz - but this is rubbish. It is another crock of utter nonsense that has been knocking around for a few years now. Whenever you get this sort of stuff, it's well worth checking on snopes.com to see if it's true or yet another "someone made it up but now because it's all over the internet people believe it" stories; before circulating it yet further........ Link to comment Share on other sites More sharing options...
malc d Posted November 3, 2011 Share Posted November 3, 2011 BGD - 2011-11-03 2:13 PM Soz - but this is rubbish. It is another crock of utter nonsense that has been knocking around for a few years now. Whenever you get this sort of stuff, it's well worth checking on snopes.com to see if it's true or yet another "someone made it up but now because it's all over the internet people believe it" stories; before circulating it yet further........ You may well be right, but who checks the accuracy of snopes ? :-| Link to comment Share on other sites More sharing options...
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