Dodge 18681 Viper - Manual (Page 94)

Operating Tips
When operating the system during the winter months,
make sure the air intake, at the right side of the hood, is
free of ice, slush, snow or other obstructions such as
leaves. Leaves collected in the air-intake plenum may
reduce air flow and plug the plenum water drains.
The blower air will heat faster in cold weather if you use
only the low blower speeds for the first ten minutes of
vehicle operation.
During engine warm-up in cold weather, use the Defrost
mode to direct any cold air away from the occupants.
94 UNDERSTANDING YOUR INSTRUMENT PANEL