Pontiac Sunbird Owner's Manual page 155

Your Driving and the Road
If MU'E Caught in a Blizzard
(CONX)
Run your engine only as long as you
must. This saves fuel. When you run
the engine, make it go a little faster
than just idle. That is, push the
accelerator slightly. This uses less fuel
for the heat that you get and it keeps
the battery charged. You will need a
well-charged battery to restart the
vehicle, and possibly for signaling
later on with your headlights. Let the
heater run for a while.
Then, shut the engine off and close
the window almost all the way to
preserve the heat. Start the engine
again and repeat this only when you
feel really uncomfortable from the
cold. But do it as little as possible.
Preserve the fuel as long as you can.
To help keep
warm,
you can get out of
the vehicle and do some fairly
vigorous exercises every half-hour or
so until help comes.
If Mu'm Stuck in Deep Snow
This manual explains how to get the
vehicle out of deep snow without
damaging it. See the Index under
Rocking Your &hide.