Extremely Bad Gas Mileage

Discussion in 'Gen 2 Prius Fuel Economy' started by MaddieS, Nov 7, 2018.

  1. bisco

    bisco cookie crumbler

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    happy thanksgiving maddie!
     
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  2. jerrymildred

    jerrymildred Senior Member

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    New theory. If the tank bladder was leaking, but the gas was still in the tank, that would gradually reduce the amount of room available in the bladder for gas. So, while continuing to get the same mpg, one would gradually get fewer milers per tank. However, the tank must have some sort of vent (probably at the highest point), to allow the bladder to expand and contract. So, I would expect the gasoline trapped between the bladder and the tank itself would get forced out of that vent when gas gets pumped into the bladder.
     
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