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Thread: 6 speed auto v 8 speed auto

  1. #1
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    6 speed auto v 8 speed auto

    Well the new 8 speed auto has been out for quite a few months now, so I was wondering what members on here who have owned a 3.0L six speed D4 think of the 8 speed in comparison? Was the hype about the 8 speed correct?

    To keep it relative I think the auto's need to be compared with the same 3.0 engine.

    Hopefully there are a few early 3.0 D4 owners out there who have upgraded to the new 8 speed model to make this comparison worthwhile.
    Cheers,
    Terry

    D1 V8 (Gone)
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  2. #2
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    Having worked for an auto trans manufacturer and gone through the transition from 4S to 6S, I'd have to say an 8S would, or should be brilliant. Fuel savings and smoothness should be getting better all the time.
    So like you, I'll be interested to see what the "real world" comparison is like.

    I can remember as a young lad, we used to say things like "feel it snap into second " etc etc etc,, wow, just all so wrong , which I didn't discover until I started working warranty units, then test driving them.

  3. #3
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    I prefer the 8spd, especially on the hwy but I find the rotary selector to be pants... I prefer the stick you had with the 6spd!

    IMHO - 8spd, stick & paddles would the be best combo.

    M

  4. #4
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    I agree with the above, the two 8 speeds I drove were wonderfully smooth, the dial sucks big time.
    My other concern is whether the sump is still the plastic version and whether it can be replaced by a steel version easily.
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  5. #5
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    Having had a 6 speed on extended test drive, and now owning the 8 speed, although the 6 was smooth enough, the 8 is noticeably better.

    Personally I actually like the rotary dial, and the fact that it returns to P by itself when you switch the engine off.

  6. #6
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    anyone have the 8 ratio's?
    "How long since you've visited The Good Oil?"

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  7. #7
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    Quote Originally Posted by phl View Post
    and the fact that it returns to P by itself when you switch the engine off.
    I hope it doesn't do that if the vehicle is still moving, as I've found it less inconvenient to stop and restart the engine on the move to overcome restricted performance.
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  8. #8
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    Have a look on DISCO3.CO.UK,there are heaps of threads about it.Almost all favour the 8speed.
    Fuel efficiency is improved,which is one of the main benefits of the 8speed.

  9. #9
    sheerluck Guest
    Quote Originally Posted by Graeme View Post
    Quote Originally Posted by phl View Post
    and the fact that it returns to P by itself when you switch the engine off.
    I hope it doesn't do that if the vehicle is still moving, as I've found it less inconvenient to stop and restart the engine on the move to overcome restricted performance.
    Graeme, I can't think of any circumstance where you would switch the engine off while the vehicle is still moving?

  10. #10
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    I've restarted the engine on the move a couple of times when its inappropriate or undesireable to stop. The procedure is detailed in a US supplement to the D4 handbook. As the brake pedal isn't required to be pressed, the vehicle's software is obviously programmed to cater for it - just be quick about it.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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