Yes, this works but as mentioned it takes time and you mustn't skip steps else you'll make things worse .

Marvel Mystery Oil works pretty well but Kano Labs in Tenn. sells better stuff, it *might* be called "KREEM", I've forgotten .

Yes, WVO cokes up and scores cylinders, this was what ruined the engine in my '84 300CD, it was so bad I had to re sleeve the cylinder block to save it (damned hippies) .

If you're planning to save this car it's time to do the long cylinder soak thing and begin looking for a wreck or rusted out parts car as this engine is clearly on it's last legs .

I ran a 240D OM616 with maybe 200 # compression and in California's warmish weather it always started even down to 40 degrees F., I made sure it had good injectors, proper valve adjustment, clean filters and fresh fuel .

It sure was slow though .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better