Just a quick review: Went to a self service garage last night to do change my brake pads (cost of doing it myself v Swiss garage is huge of course).
Great experience and the owners son called 'Castro' spoke perfect english and was very helpful. They have lifts and ALL the tools you could need.
21CHF per hour to rent the lift and tools to work on your own car/bike/whatever...
Garage is called Mataj SelfGarage in Winterthur. Easy to find on Google maps: https://goo.gl/maps/UmWo18sYbeT2