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81' XJ750RH YICS Fuel Efficiency

Discussion in 'XJ Technical Chat' started by Mobius Williams, Aug 22, 2020.

  1. Mobius Williams

    Mobius Williams Member

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    Does anyone know at what cruising speed the 750RH YICS gets the best fuel efficiency? Is it better doing 55mph on state highways or doing 75mph @ 6000 rpm on the interstate? Or is there even that much of a difference?
     
    Mobius Williams, Aug 22, 2020
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  2. Polock

    Polock Well-Known Member

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    it's not about the engine, it's about the air. it doesn't like to move, takes a lot of gas to move it. 35 mph it about right, a tank of gas lasts forever
     
    Polock, Aug 23, 2020
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  3. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    It's always better to ride on whatever route you enjoy the most.

    At 55 I get around 48 MPG. At 75 I get around 44 MPG. (without headwinds it's a bit better)
    85 and above is where mileage begins to drop off significantly, and rapidly.
     
    k-moe, Aug 23, 2020
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  4. Mobius Williams

    Mobius Williams Member

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    Ok. Thanks
     
    Mobius Williams, Aug 23, 2020
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