Here's a link to the add...

oklahomacity.craigslist.org/car/....html

and a bit from the add...

I arrived in OK from California this summer with a 1981 300TD Mercedes Benz Sation Wagon. Has 324.5K miles on her, the last 10,000 of which were fuled by veggie oil. She has a strong engine and runs excellently in town and on the highway. She runs as good or better on biodiesel and grease than on diesel. The grease system is a custom two-tank system designed by Raw Energy out of San Rafael California. It is wired to run a pump off of the car battery for easy fueling behind restaurants or wherever you find good quality grease.

There is a motor oil leak near the oil pan and there are problems with windows and door locks. She has brand new AC and glow plugs. No radio. Tires and brakes are in very good condition. Will probably need a valve adjustment in near future. Call to discuss, see pics or meet.

Pictures are of: 1 - The wag, decorated for the 2006 Zero Carbon Parade in Berkeley, Ca last November. 2 - The 26 gallon tank (drive forever for free!) and pump system in the back. 3 - Close up of the user friendly pump intake end and nozzle end. 4 - Close up of the heated grease filter under the hood.
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Asking $4500. Happy to negotiate. Call 415-464-7794