Tips on Filling your Vehicle Receive the below from one of the friend: BUY OR FILL UP YOUR CAR OR BIKKIE 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 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. 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. 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 mini...