Let's start with a quota you get what you pay for I use a good quality snow foam that costs apx £20 per 5ltr What I have found over my 34 years on bikes (is as someone has quoted ) A jet wash can and enviably will damage chains bearings and seals Unless you use a low pressure washer or low pressure nosel Let's start with how I do it Low pressure smal spray gun less than 10 psi spray over with clean cold water Then using the same psi with a snow foam dispensing gun spray the whole bike all over even up under the tank Then it's a nice coffee and a 10 min wait so the foam can pull all the fine partials of dust and grit off the bike Now using no more than 15 psi on an open fan lance I tane 15 mins to remove all the snow foam starting at the highest part of the bike or car One thing I have not tried as yet is a master blaster to dry the bike again I am not sure how it would force water int all the bearings etc I use micro fibre cloths to dry every part I can get to and a hair dryer on the top end of the engine And that's before I start to polish and then acf the bike