'19 Cascadia (2) 100G Tanks - Qty Usable Fuel?

Discussion in 'Freightliner Forum' started by Lucky12, Apr 9, 2021.

  1. Lucky12

    Lucky12 Medium Load Member

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    I have never filled up more than 150 gallons, and that is with truck showing E. How much more fuel could I have used? Any idea if (2) tanks, marked 100G capacity each, what is the actual working quantity of fuel?
     
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  3. jason6541

    jason6541 Road Train Member

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    Believe tanks are marked at filler neck usable capacity is 90%
    But if you run them that low you risk sucking air and possible damage to fuel system.
     
    Dave1837 Thanks this.
  4. Dave1837

    Dave1837 Heavy Load Member

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    Don't run it long after the light comes on. I've ran my Mack about 10 miles after the light came on and it only took 114 gallons, 2 100 gallon tanks. If you run it too low it will run out of fuel even if there's still fuel in the tanks, just because it sucked up an air pocket due to going down or up a hill.
     
    bzinger Thanks this.
  5. bigkev1115

    bigkev1115 Road Train Member

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    Another thing with the Cascadias, the fuel gauges are usually 1/8 to 1/4 off too.
     
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