On May 21, 12:58 pm, VladicRav...@gmail.com wrote:
> I just bought a 1989 Volvo 740 GL and it has that button for the
> overdrive. What does it do? and when should I use it? I know this
> is probably a stupid question, but I would still much appreciate an
> answer.

As others said it is nothing more than another gearbox added to the
back of the standard transmission. The Laycock de Normanville unit
has been used in a wide variety of cars.


> I'm sure whatever it is, it's only half as endearing as the
> hand cranked sunroof.

I'm confused by this statement. The overdive unit is in my experience
very reliable. And the hand cranked sunroofs in two of my earlier
cars were quite reliable too.

Thought for the day: Older Volvos have a way of combining endearing and
enduring into one.


"Roadie" <hjsjms@cs.com> wrote in message
news:1179789245.019777.173160@z28g2000prd.googlegr oups.com...
> On May 21, 12:58 pm, VladicRav...@gmail.com wrote:
> > I just bought a 1989 Volvo 740 GL and it has that button for the
> > overdrive. What does it do? and when should I use it? I know this
> > is probably a stupid question, but I would still much appreciate an
> > answer.
>
> As others said it is nothing more than another gearbox added to the
> back of the standard transmission. The Laycock de Normanville unit
> has been used in a wide variety of cars.
>
>
> > I'm sure whatever it is, it's only half as endearing as the
> > hand cranked sunroof.
>
> I'm confused by this statement. The overdive unit is in my experience
> very reliable. And the hand cranked sunroofs in two of my earlier
> cars were quite reliable too.
>
>

Roadie wrote:
>
> On May 21, 12:58 pm, VladicRav...@gmail.com wrote:
> > I just bought a 1989 Volvo 740 GL and it has that button for the
> > overdrive. What does it do? and when should I use it? I know this
> > is probably a stupid question, but I would still much appreciate an
> > answer.
>
> As others said it is nothing more than another gearbox added to the
> back of the standard transmission. The Laycock de Normanville unit
> has been used in a wide variety of cars.
>
> > I'm sure whatever it is, it's only half as endearing as the
> > hand cranked sunroof.
>
> I'm confused by this statement. The overdive unit is in my experience
> very reliable. And the hand cranked sunroofs in two of my earlier
> cars were quite reliable too.

If you desire a "normal" fuel economy it is only used when
towing, climbing hills and possibly passing. Keeping it on
will lower your gas mileage since you will be in a lower gear..

hope helps...have fun....sno

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