Petrol station bike wash

[Lez72]

You should be fine using a garage pressure washer as long as (like others have said) you don't stand too close and don't direct the jet at the radiator or greased linkages. I think any possible staining is due to not getting rid of the excess water and cleaning chemicals prior to the bike heating up again i.e. like riding it home whilst still wet. If you dry it off as best as you can whilst at the garage you should be ok but make sure you lubricate the moving parts when you get home.

If you can get an outside tap fitted at home it's a bonus. I tend to use a Muc Off (or similar) type of motorcycle cleaner that I spray all around the lower parts of the bike (not seat or bodywork). I then use good old fashioned vehicle shampoo in hot water and a soft sponge and try and get into as much of the bikes nooks and crannies as possible. I then hose off all the cleaning fluids and use an air compressor to blast out a lot of the remaining water. I then coat with GT85 or ACF50 if I'm feeling flush and again use the air compressor to blast that around the engine and metal parts and drive any remaining water out. I then remove the residue with a soft, dry microfiber cloth followed by polishing the metal parts and bodywork. I then use brake cleaner on the callipers and discs to make sure there is nothing nasty left on them and relube the chain.

Its a lot of work but the bike looks better for it.