Hi everyone, new guy here. I'm looking for a Mercedes diesel. found a possibility, a 1981 300D. Appears to be in good shape, except for "engine makes a racket, and lost power". price is $400. ive been a mechanic for 25 years, but never worked on MB. how bad are parts prices? looks like Haynes manual is available for this car, should i be afraid to go through the engine myself? i plan to do a WVO conversion on this car, i understand they work very well on Mercedes diesels. anyone here with a MB greasecar? thanks for any input. I'm Greg.