increased fuel economy Prius

ok this is a no-brainer.
I've been driving around with the vent control set at fresh air. For a
couple of days now I set it for re-circulation down and out instead. Engine
takes less time to warm up and stay off.
mark_

mark_digital© wrote:[color=blue]
> ok this is a no-brainer.
> I've been driving around with the vent control set at fresh air. For
> a couple of days now I set it for re-circulation down and out
> instead. Engine takes less time to warm up and stay off.
> mark_[/color]

Check the owners manual. Most manufacturers don't recommend leaving the
control in this position because it's potentially dangerous.

It depends on how tight the car is in general

If it is completely tight you might run out of oxygen

Is that likely?

They could have a safety valve so if the oxygen level goes below a safe
level it might open a window or a door and let some oxygen in

If you have a leaky exhaust system it could be dangerous but otherwise the
problem is that your windows will fog up eventually.


"Gosi" <gosinn@gmail.com> wrote in message
news:1141653876.805063.130310@i39g2000cwa.googlegroups.com...[color=blue]
> It depends on how tight the car is in general
>
> If it is completely tight you might run out of oxygen
>
> Is that likely?
>
> They could have a safety valve so if the oxygen level goes below a safe
> level it might open a window or a door and let some oxygen in
>[/color]

In article <440c329c$0$25080$4d3efbfe@news.sover.net>
[email]FanJet27@hotmail.com[/email] "FanJet" writes:
[color=blue]
> mark_digital© wrote:[color=green]
> > ok this is a no-brainer.
> > I've been driving around with the vent control set at fresh air. For
> > a couple of days now I set it for re-circulation down and out
> > instead. Engine takes less time to warm up and stay off.
> > mark_[/color]
>
> Check the owners manual. Most manufacturers don't recommend
> leaving the control in this position because it's potentially
> dangerous.[/color]

Volvo (in the days when they were Real Volvo, not Fake Ford), as
in the 440, ensured that one-fifth of the "recirculated" air in
fact came from outside, to prevent a dangerous O2/CO2 mix.

I have wondered about Toyota's thinking on this.
--
Andrew Stephenson

"Art" <begunaNOSPAMPLEASE@mindspring.com> wrote in message
news:7IYOf.692$sL2.295@newsread2.news.atl.earthlink.net...[color=blue]
> If you have a leaky exhaust system it could be dangerous but otherwise the
> problem is that your windows will fog up eventually.[/color]

My celica mists up within minutes if i leave it on recirc. It also doesnt
warm up any faster or slower, but i do cos its not blowing icy outside air
in :D

J

On Mon, 6 Mar 2006 08:01:51 -0500, "FanJet" <FanJet27@hotmail.com>
wrote:
[color=blue]
>mark_digital© wrote:[color=green]
>> ok this is a no-brainer.
>> I've been driving around with the vent control set at fresh air. For
>> a couple of days now I set it for re-circulation down and out
>> instead. Engine takes less time to warm up and stay off.
>> mark_[/color]
>
>Check the owners manual. Most manufacturers don't recommend leaving the
>control in this position because it's potentially dangerous.
>[/color]

Even on full re-circulation mode, a certain percent of outside air is
still allowed in to thwart people from carbon monoxide poisoning. I
believe this is true of most manufacturers.

"mark_digital©" <976XXX@nospam.net> wrote in message
news:dvudndbeusJOvpHZRVn-hg@comcast.com...[color=blue]
> ok this is a no-brainer.
> I've been driving around with the vent control set at fresh air. For a
> couple of days now I set it for re-circulation down and out instead.
> Engine takes less time to warm up and stay off.
> mark_[/color]

How does that help mpg?

I'd expect putting the heater on Cold would help, regardless of vent
control - is that the same thing on a Prius?