It takes about 2~5 liters (0.5~1.3 gallon) of water depending on the user’s skill level and how big and dirty the car is.
Also, the climate of the car wash site affects the water consumption rate. For example, a user in a very dry and hot
climate should expect to consume more water because more water content of the steam is evaporated into the atmosphere
before being in contact with the car surface.
Is steam wash as effective as using water when cleaning a very dirty car?
The Optima Steamer effectively washes various surfaces using steam with high temperature (operational steam temperature :
below 100°C / 212°F) and relatively low yet powerful enough amount of steam pressure. The heat of the steam helps break
down dirt and mud on car surface very quickly and efficiently. Also, all Optima models are equipped with a moisture
control valve that can add more moisture to the steam for a faster car wash. If you open up the moisture control valve,
the Optima Steamer can spray up to 1200 cc/min per spray gun. This helps washing very muddy cars more quickly, but more
water will be consumed.