How do cars measure fuel level accurately when the fluid is constantly sloshing around?
In: 2855
The gauge in your dashboard responds to change very slowly. So it is too slow to show the sloshing. This is on purpose.
If you leave the power on while filling the tank, it will not show full for a few minutes or more after you are done filling it.
If you turn the ignition off for a few seconds(or more) the gauge will reset, and show the current level – full instantly.
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