How do you change the oil and primary drive lubricant on a BMW R1200C?

There is no primary oil to change. The engine oil is changed by using a special cup type filter wrench. The filter is flush with the bottom of the engine. there should be an allen head drain plug for the engine oil.

to prevent old oil from being trapped in the oil coolers by the thermostat, change the oil cold after the engine was ridden for at least 30 min.

you can change oil hot too, but NOT just after a 2 minute run cycle. all this does is trap old oil in the coolers.

There is trans. oil to change as well as final drive fluid. The engine normally uses 4 qts. 20w50. the trans and final drive are best serviced with 75w140 synthetic gear oil. should take just over a quart to do both.