Oil change on 1982 Mercedes 300SD turbo diesel?

What weight oil do I use and how many quarts? Via American Standard unit of measurement. Also, at what mileage interval does that oil need to be changed? Any specifics on brand of filter and oil? 222,400 miles on the original engine.Oil change on 1982 Mercedes 300SD turbo diesel?use rated cd ..diesel oil don't use the cheap stuff...i had those models..it has more than 222,000 miles i never seen one with the mileage working...haha.ask the autoparts people for capacity..i can%26quot;t remember.