There is no cat and any diesel can run biodiesel without modifications.

 

BC, here in Canada has made it a requirement to run 5% BIO in the dino diesel and I am noticing some smoke from the R Class - not lots by any stretch but some and I am also noticing a small drop in economy as a result.

Not sure of all of the reasons yet as it just could be winter fuel too.

 

I was not saying he could'nt run bio Forced.Some of these new fangled diesels have filters.
I still have my SD,and new to me ,1999 S500.
Hey Mercedes's fans,Forced Induction,knows how to make power.Ask him before you tinker,he has helped me many times.

 

Hi
I saw your profile: You have a 1938 Mercedes Diesel.
Can you post photos ?

















Just kidding,
I know it's a '83 and they did not make a 300SD in 38,but they did have then a 260D the first passenger car with a diesel motor !!!