[SLK 230] What kind of Oil to use?

Hello everybody. I have to change the differential oil and the transmission oil in my SLK 230K '97.
I have more then 110.000Km I heard I have to use a different oil grade
from the factory.
Can you suggest some good one please? Thank You. Regards

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.