Civility Please, Ladies And Gents: ZDDP (zinc/phosphate) additives in om603

[cdragotta]

OK…

As a relative newbie to the diesel world, I just recently learned that modern diesel oil’s do not have zinc in them, or the amount of zinc in the formulation has been greatly reduced to account for new emission standards and equipment.

With the OM603 engine, would it be wise to use a zinc additive? I have tried to search the forums and all I have found is conflicting information As well as downright bullying. So I ask here… Will a ZDDP additive help to protect my engine?

Please keep it civil, folks. I don’t want this thread to wind up like the “verbal disagreement” thread I’ve been reading. 🤦🏻*♂️


Chris Dragotta
Benson, NC
1992 300D (Daily Driver)
1991 300D (The Backup)
1987?300SDL (The Parts Car)