I've not been able to find a similar question on this topic, so apologies if it is a duplicate.
I picked up a new car at the beginning of the week and noticed that after using the wiper fluid it leaves behind a 'stain' of sorts and it is marking the paintwork.
I have no clue as to what mixture/concoction of fluid is currently being used, so I have decided it would be best to drain, flush and replace with something I know.
Is there a 'standard' way to drain wiper fluid?
Note: I have 0 mechanical experience and the car in question is a 2011 Ford Fiesta.