My tip for cleaning the wheels/spokes. Use a broad soft bristle paint brush soaked in detergent solution. Works well in the nookes and crannies of engine as well, particularly cylinder fins.
Also, get a jack under the suspension and lift each wheel just enough so you can spin it. Gets the job done MUCH more quickly and evenly. Great way to do the tires too. Wrenches here in the USA always go for Dawn dishwashing liquid... it's what's used to wash the grease off of birds after oil spills... it's the best
