HOW TO CHANGE THERMOSTAT, WHERE IS IT LOCATED? on 1991 BMW 750iL

Are other parts required to be removed and what's the proceedure to refill cooling system? What coolent do I use and how much mixture with water? Please provide any other info that would help me change my themostat?
Thanks for your help, Craig McConnell

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1 answer
Here you go complete process and tools required: http://www.ehow.com/how_4531713_replace-bmw-thermostat.html
Coolant should be listed in owners manual or call parts store or a dealer to find out. Mix is 50/50 using distilled water not tap water. Some coolants come pre-mixed.