Daddy Ireland
Registered User
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- 458
Very cold weather, headwinds, sidewinds, using the heater, A/C, blower, rear window heater, lights, tyre pressures and lots of other factors can influence fuel consumption, including the quality of the fuel. Who calibrated the electronic fuel consumption displays and certified them as accurate or at least equally inaccurate!
IME there is only one way to measure actual fuel consumption accurately.
- Read the odometer,
- Fill the fuel tank to the brim (to the brim, not until the pump cuts out because different pumps may cut out at different levels)
- Drive around going about you regular buisness until you need to refill the tank
- Read the odometer
- Fill the fuel tank to the brim again
- Do the sums.
There is no need to do the brimming thing again. Just remember to record the mileage and the quantity of fuel filled at each top up. I write the mileage on the fuel receipt and I always ask for a receipt showing litres of fuel purchased. ( "are ya claining VAT?", "but ya have the credit card receipt" )
Keep track of your various calculations in a spread-sheet, aiming for an overall number. The bigger the sample you take the more likely you are to have a decent overall number. In Formula 1 they don't dispense litres of fuel, they dispense kilos. Like with other volatile fluids, changes in temperature effect the volume of fuel. This applies to petrol more then diesel (or red biddy!) but the capacity of a tank is not fixed.
That lad of the Boyles was quare handy I tell ya, quare handy!
HTH
p.s. I can suggest fuel saving measures but most prople probably won't like them
Is that 4c off a litre if you use their fuel card or that by using their fuel you can save up to 4c a litre compared to a different brand of fuel ??
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