Optima Steamer XD is not only a professional external car wash machine but also an excellent car interior cleaner because it is an effective disinfection machine and a chemical-free weed-remover. Also, it can be used for a multi-purpose cleaning machine without changing internal settings or parts. With a portable generator, the machine becomes a portable steam cleaner to clean even in outside. Optima Steamer XD is a better version of Optima Steamer DM(DMF). It is more convenient for function and use. For example, there is one emergency stop switch for safety. The size of tanks for water and fuel are increased. Also, it is so structurally convenient for maintenance. Its structure makes a user change the electric heater easily. Moreover, it has a compact and good looking.