New answers tagged

-1

It depends. Despite the number of answers "confirming" no, I'm going to provide some outside sources that indeed show you're correct, or at least in some situations you can be - although it's not to discredit the points made, and the difference in reality is negligible, in either direction. There are several factors that affect your gas mileage ...


2

I feel that it takes a lot longer to go through the upper half of the tank than the bottom half of the tank. Your feelings are valid so if it makes you feel better then continue doing so. That feeling is going vary from car to car and from person to person. However, science would dictate that a heavier car causes worse fuel economy but whether or not you'll ...


3

You are being fooled by the psychology used by car manufacturers, who've discovered that A - if the gas indicator doesn't move for a while after a full tank, it makes the driver think the car is more economic than it is and B - if empty means empty, a lot of idiots will get themselves stranded. Therefore most car fuel gauges these days leave ~50 km as a ...


1

You can't get better MPG with a full tank. The engine simply cannot use gaseous fuel. It must be liquid or the injectors cannot correctly meter. The top half is larger due to "Unusable Fuel" Open up a modern fuel tank and you'll find an electric pump in there. It creates high-pressure fuel (300 KPA/45 PSI or so) to supply the fuel injectors. ...


-3

Yes, Your car will operate normal with a full tank and not less. If you have less gas in the tank it takes more electrical energy to pump the gas to the front therefore there will be a quicker evap. and more gas used. Ever notice how long it takes for the gas gage to go down from full to half and quicker after a half tank.


12

IF - the tank was uniform in its dimensions - vertical sides, etc., and IF - the gauge sender worked exactly in a linear manner, and IF - the gauge responded in that same linear manner, and IF - the sender sent 'tank full' message to the gauge when it was full, then the half-full shown on the gauge would be truthful. However, none of those can be true. The ...


14

The best way to determine the actual fuel consumption is to brim the tank, drive till nearly empty then brim the tank again. Then you have an exact volume of fuel and a specific distance. Repeat over three or four tanks and you will have an accurate fuel consumption figure based on your actual use. The gauge is not linear in performance and not designed to ...


46

No. If anything you'll get worse gas mileage with a full tank because you're carrying a heavier load (more fuel = more weight). What you are most likely experiencing is the top half of the tank is larger than the bottom half (in general terms). In other words, the sending unit (float level) in the gas tank most likely takes longer to traverse the top 1/2 ...


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