Mobile car valet - Water tanks?

Question

how long would a 300 ltr water tank last, if i were to valet roughly 15 cars a day?

thanks

Answer 1

Depends on the size of the cars how dirty they are and if you are hand washing... if you were to use four 5 ltr buckets of water for each car the 300 ltrs would do 15 cars..if you were to use a fairly modest pressure washer then you would need to be careful a Karcher K2 with a working pressure of 80 bar has a flow rate of 330 Litres per hour ,so as you can see if you use some thing like that which is a reasonable entry level washer,you'd need to keep a close eye on your water level,others with in that range have flow rates of over 500 litres per hour....