1994 Cadillac Fleetwood Owner's Manual - Page 213

Run-your engine only as long as you must. saves fuel.When you This run the engine, make it go a little faster than just idle. That is, pushthe accelerator slightly. This uses less fuel the heat that for 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 heaterrun for awhile. the the Then, shut the engine off and close window almost all way to preserve the heat. Start the engine againand repeat this only when you feel really uncomfortable from the cold. But it aslittle as possible. Preserve fuel as do the long as you can. keep warm, you can out of the vehicle and do some To help get fairly vigorous exercises every half or so until help comes. hour 200