NOT Fantastic Mileage on Highway Trip
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  • 1 Post By Submariner409
  • 1 Post By Superjim
Cadillac DTS Forum - 2006 through 2012 Discussion, NOT Fantastic Mileage on Highway Trip in Past Cadillac Vehicle Discussion; This was my average speed and average mileage yesterday over about a 200 mile stretch of my trip yesterday... Remember ...
  1. #1
    Superjim's Avatar
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    NOT Fantastic Mileage on Highway Trip

    This was my average speed and average mileage yesterday over about a 200 mile stretch of my trip yesterday...
    Remember this was AVERAGE speed and mileage and included two stops for Darling Wife... LOL
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    Submariner409's Avatar
    Submariner409 is online now If it won't run, stick on fender vents
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    Re: NOT Fantastic Mileage on Highway Trip

    It takes a LOT of gas to push the car over the road and through the air at 85 mph. Normal mileage for your driving conditions. If you had done it at 62 mileage would have been better - remember - your car has the 3.71:1 performance final drive - that engine spinning at about 2800 is happily guzzling gas.
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    Re: NOT Fantastic Mileage on Highway Trip

    Quote Originally Posted by Submariner409 View Post
    It takes a LOT of gas to push the car over the road and through the air at 85 mph. Normal mileage for your driving conditions. if you had done it at 62 mileage would have been better - remember - your car has the 3.71:1 performance final drive - that engine spinning at about 2800 is happily guzzling gas.
    Yep.. I know...
    There was a thread a while back where someone claimed to have got some real high fuel mileage on a trip...
    I was just kinda poking fun at that.... wishing MINE would do it too... LOL

    That's about what it usually does at that speed... usually it is closer to 20 or 20.2...
    Yesterday I was having to do a lot of slowing down and then speeding back up...
    Most of the time the speed was in the low to mid 90's to be able to have the 83 average...
    tjwhite721 likes this.

  5. #4
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    Re: NOT Fantastic Mileage on Highway Trip

    Quote Originally Posted by Superjim View Post
    Yep.. I know...
    There was a thread a while back where someone claimed to have got some real high fuel mileage on a trip...
    I was just kinda poking fun at that.... wishing MINE would do it too... LOL

    That's about what it usually does at that speed... usually it is closer to 20 or 20.2...
    Yesterday I was having to do a lot of slowing down and then speeding back up...
    Most of the time the speed was in the low to mid 90's to be able to have the 83 average...
    That's how you drive a Cadillac!!! I would rather drive 80/90 mph and average 20mpg gallon and enjoy the smoothness and power of the vehicle, than drive 65 like your driving Ms. Daisy. :-)

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    Re: NOT Fantastic Mileage on Highway Trip

    Yeah, well ........... it's all relative: At 125 mph steady my STS burns about a gallon every 6.5 miles - but at 65 it does 24.8. If I were in Texas the car would be speedily happy - but in many places here on the East Coast 85 on I-95 will get you a big ticket, so we putt along at 76.

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    Re: NOT Fantastic Mileage on Highway Trip

    Quote Originally Posted by tjwhite721 View Post
    That's how you drive a Cadillac!!! I would rather drive 80/90 mph and average 20mpg gallon and enjoy the smoothness and power of the vehicle, than drive 65 like your driving Ms. Daisy. :-)
    The speed limit on most Interstates and a good portion of the State roads in Texas is 75 mph... with West Texas being 80 mph and a new Toll Road in Central Texas with a 85 mph speed limit.
    It's pretty easy to run 80+ all day long because most people drive 5 to 10 over the speed limit anyway.

  8. #7
    Aeros is offline Cadillac Owners Member
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    Jim, unrelated, but I noticed you have a green light under your drive gear. Mines red on my 08. Weird.

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    Re: NOT Fantastic Mileage on Highway Trip

    Quote Originally Posted by Aeros View Post
    Jim, unrelated, but I noticed you have a green light under your drive gear. Mines red on my 08. Weird.
    It is only green when in "D"... all other positions are red...

  10. #9
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    Re: NOT Fantastic Mileage on Highway Trip

    Mine has never gotten over 22 on the highway, and that was doing 65 between Chicago and STL on the solid I-55 speed trap zone.
    NOW
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    '70 Grand Prix Model J (4/09-?)
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  11. #10
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    Aero I notice that the D is green on the ones that have the colum shift a friend of my has the one on the floor his is red.

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