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Driving a Manual Trans Downhill

Discussion in 'General Automotive' started by The Big O, May 5, 2011.

  1. May 5, 2011 at 12:20 PM
    #1
    The Big O

    The Big O [OP] Well-Known Member

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    My father and I were talking about this the other day and I just wanna know what you guys think/do. I have a manual trans in my taco and when I go down hills I like to shift out of gear and let gravity accelerate my car and take me down hill, using my brakes to control my speed if needed. I drive like this to save gas. My father likes to leave it in gear and let the trans control the speed down hill. He does this to extend the life of the brakes. Also he was a truck driver for 20+ years so it's just ingrained in him.

    How do you go about driving your stick downhill?
     
  2. May 5, 2011 at 12:22 PM
    #2
    steve o 77

    steve o 77 braaap

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    I leave it in gear, or maybe even downshift a gear.
     
  3. May 5, 2011 at 12:24 PM
    #3
    OZ-T

    OZ-T Thats what it is to be a slave ...

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    Yup
     
  4. May 5, 2011 at 12:25 PM
    #4
    davestaco

    davestaco TW's number one gear whore

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    how do they know im coasting in neutral? is there a neutral detector i dont know about?
     
  5. May 5, 2011 at 12:29 PM
    #5
    08pretaco

    08pretaco Almost there

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    What if your driving a prius...they wouldnt be able to hear you...
     
  6. May 5, 2011 at 12:32 PM
    #6
    TacoCat

    TacoCat Look away, I'm hideous!

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    Depends on the grade/length of a hill. I always figured if I'm doing 2k rpm versus 1200rpm the lower rpms would burn less gas. If I'm going down the side of a mountain I'm downshifting to save the brakes. I'd rather burn a little more gas than lose my brakes and fly off the edge of a mountain. But then again here in the DC 'burbs I don't have to worry much about mountains. Don't have to worry much about hills for that matter either.
     
  7. May 5, 2011 at 12:32 PM
    #7
    08pretaco

    08pretaco Almost there

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    Then shouldnt all Prius going downhill get pulled over for coasting in neutral?
     
  8. May 5, 2011 at 12:33 PM
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    steve o 77

    steve o 77 braaap

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    no because I've never heard of a cop actually enforcing that law.
     
  9. May 5, 2011 at 12:35 PM
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    OZ-T

    OZ-T Thats what it is to be a slave ...

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    If you went down all the hills around here with brakes only and not downshift , your brakes wouldn't last long .
     
  10. May 5, 2011 at 12:35 PM
    #10
    08pretaco

    08pretaco Almost there

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    Im just being an asshole, i really could care less lol
     
  11. May 5, 2011 at 12:42 PM
    #11
    The Big O

    The Big O [OP] Well-Known Member

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    I should have specified a little more... a hill to me may not be the same as a hill to some of you out on the west coast... If I'm on the highway and I see a 1/2 mile of straight downhill ahead of me I'll take it out of gear and coast down the hill instead of leaving it in gear

    also there is a stretch of road on my way home from school that is about a mile long and a gradual downhill.. I can stay our of gear and maintain 35-40mph all the way down instead of leaving it in gear @ 2500 RPM's
     
  12. May 5, 2011 at 2:06 PM
    #12
    davestaco

    davestaco TW's number one gear whore

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    haha ya i was bein a ass to sorry lol:eek: good point about the shifting thing. some laws i wonder why they even bothered to create ya know?
     
  13. May 5, 2011 at 3:10 PM
    #13
    davestaco

    davestaco TW's number one gear whore

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    bahahah next there gonna start givin tickets for your shades being to dark
     
  14. May 5, 2011 at 6:34 PM
    #14
    maxpower29

    maxpower29 Well-Known Member

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    I dunno about you guys, but I coast in neutral a lot
     
  15. May 5, 2011 at 6:34 PM
    #15
    OZ-T

    OZ-T Thats what it is to be a slave ...

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    Pointless
     
  16. May 5, 2011 at 6:40 PM
    #16
    maxpower29

    maxpower29 Well-Known Member

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    well Im getting better mpg then most on here hand calculated, so I think its working
     
  17. May 5, 2011 at 6:48 PM
    #17
    OZ-T

    OZ-T Thats what it is to be a slave ...

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    I average 18.5 MPG in my 4.0 V6 DCLB 4x4
     
  18. May 5, 2011 at 6:52 PM
    #18
    maxpower29

    maxpower29 Well-Known Member

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    Last 500-600 kms I got 23.8 still with the stock air filter, and stock oil, and only 1500 kms on the motor
     
  19. May 5, 2011 at 6:54 PM
    #19
    OZ-T

    OZ-T Thats what it is to be a slave ...

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    You have the I4
     
  20. May 5, 2011 at 6:57 PM
    #20
    maxpower29

    maxpower29 Well-Known Member

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    ya but with a good filter and the truck broken in I will be 25-26 easy. Thats pretty good IMO.
     
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