I wash probably about once every two weeks, pretty dirty so a lot of shampoo, probably 4 oz. if i could put a number on it. Usually a mini detail when I wash so, clean tires, wheels and undercarriage first can take up to 1 hr. Use APC on each tire 2-4 times to get them clean. Wash process is quick but drying takes a while. SVRT on plastics, usually a re-application of glaze and wax. 4hrs for a quickie, and 6hrs taking my time