I live in Ghana, West Africa, and expect to be commercially producing biodiesel within the next year. Of course I want to burn it in my own "wheels". I have always had a hankering for a Benz - there are lots for sale in Ghana, some recently imported used into the country, primarily from Europe, some from the USA, and some have been there and in use for many years. I am currently visiting in Canada but will return soon and will be out knocking tires, looking for the perfect Benz for me. What advice do you have as to models/engines/years to look for and to avoid?