Installing a new radiator and cooling fan in my 1987 Mercedes-Benz 300SDL

[@KortNatali]

In my experience 100c is pretty typical for these motors here in Phoenix in the summer with the ac on, factory manual says it’s ok, if the car is properly maintained I don’t see the issue.

[@bsclifton]

Thanks for sharing - that is good to know! 🙂 I don't really have any point of reference for the OM603 (other than my 300D). My 300D is totally stock (all MB parts) and usually sits 82 - 85-ish

[@KortNatali]

@@bsclifton yeah 80’s is what mine normally runs at when your moving or on the freeway but stop and go traffic it will start to inch up close to 100. Although anything over 100 is abnormal and needs to be looked at.