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You do use more gas after the half mark because of evaporation. It's one of the first things you learn when you work with check emissions. This is why they test your gas cap as it allows a minimum amount of evaporation, but it does still make its way out of the tank without going through the engine.
Here is a quote from an experiment performed and published in New Scientist about why this happens:
SLIGHTLY more practical routes to fuel economy occurred to Cliff Allen when he noticed that, according to his petrol gauge, the fuel in the top half of his tank lasted considerably longer than the bottom half. As any Feedback reader (and possibly only a Feedback reader) would, he investigated. Systematically.
Over several months he recorded the distances travelled using the fuel from the top and bottom halves. The average for the top was 400 kilometres (250 miles) and for the bottom a mere 300 kilometres (185 miles). Since then, he writes, "of course I have only used the top of my tank and have consistently achieved around 250 miles - I'm not stupid!"
Cliff was obviously keen to discuss this, at length, with his learned friends, "some of whom gained General Certificate of Secondary Education qualifications" at age 14. He was "mostly appalled at their incredulity and lack of interest".
However, his friend Alan suggested that the fact that petrol always comes out of the bottom of the tank causes it to use more petrol so we might benefit from turning the tank upside-down. John suggested the increased efficiency might be due to the height of the fuel, so the tank should be put on the roof. Mostyn proposed putting a brick in the tank, as this apparently works very well for saving water in toilet cisterns. Tony wants to make the top of the tank larger than the bottom, to increase the proportion of its volume at the top, and thinks a carrot shape would be optimal.
What else can I help you with?
Why does vehicle start easier when the tank is more than one half full yet starts are very difficult and require cranking when below half a tank?
There is more fuel pressure
Can a tank of gas ever be half full?
Yes, a tank of oxygen can be half full. The oxygen would be stuck in said tank meaning no more oxygen can get in unless refueld.
Can a tank of oxygen gas ever be half full?
Yes, a tank of oxygen can be half full. The oxygen would be stuck in said tank meaning no more oxygen can get in unless refueld.
The amount of water flowing into a tank doubles every minute when was the tank half full?
If the amount of water flowing into the tank doubles every minute, then the tank was half full one minute before it became full. Therefore, if the tank is full at a certain time, it was half full just one minute prior to that time.
Is it better to keep your gas tank at half or a full tank?
For long term storage, keep it full.
Can a tank of oxygen gas ever be half-empty explain?
No, a tank of oxygen gas cannot be half-empty. The amount of gas in the tank is either full (100% capacity) or partially filled (less than 100% capacity). The term "half-empty" implies a volume of gas that is below 50% of the tank's capacity, which does not accurately describe the status of the tank.
Can tank of oxygen gas ever be half empty.explin.?
Yes, a tank of oxygen gas can be considered half empty when compared to its full capacity, as the amount of gas in the tank is only half of its total capacity. However, from a different perspective, the tank is also half full as it still contains half of the gas it originally held. It depends on whether you view the situation optimistically (half full) or pessimistically (half empty).
What happens when petrol trucks are half full?
well if you are an optimist you could say 'The tank is half full'.
Can a tank of oxygen gas be half empty?
Yes, a tank of oxygen gas can be considered half empty if it has used up half of its contents. However, it is more accurate to describe it as being half full, as it still contains half of its original volume of gas.
Why would the fuel gauge not move below the half but does move above the half on a Chevrolet trailblazer?
The float in your gas tank is sticking when it gets to half a tank of gas. This will make the gas gage stay at half and not register below that but it is possible for the float to rise.
Why is your toilet tank less than half full?
It is not - I just checked and is is nearly 80% full.
A petrol tank is half full. If I add 16 liters it will be two thirds. How many liters does the tank hold when full?
96 litres.
