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Filling Up Your Car/Motorbike.


Lantern Swinger
I was reading some articles regarding the rising price of petrol/diesel and I came across this item which may help a little. I have pasted it so hope it comes out.

ONLY BUY OR FILL UP YOUR CAR OR BIKE 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 denser the fuel, 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 play 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. In slow mode, you should be pumping on low speed, 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 TANK IS HALF FULL. The reason for this is, the more fuel you have in your 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 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, WHEN YOU STOP TO BUY AND THERE IS A FUEL TRUCK PUMPING INTO THE STORAGE TANKS, 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 of the dirt that normally settles on the bottom.

Hope, this will help you get the maximum value for your money.
I read in the paper over the weekend that they're going to show porn movies in fuel stations. It's a ploy to take your mind off the fact that it's you who's actually being f#cked.....


some great tips, in industry we take into consideration the density of the liquid, so measure mass not quantity, I assumed petro-chem did the same, now as for filling the tank/evaporation issues what you say is something I've always believed, but the hypermiling lobby tell us that to do that we burn extra fuel carrying the extra fuel, but sat here now I wonder what percent of the total weight of 1.5 tonnes of swedish steel plus one 200 lb uk male, 30 litres of fuel repesents, pretty small I guess.
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