I have a MB citan van but no manual available. Looking for advice on replacing air filter and oil filter.
It is quite a painful process I must confess.
Simply follow the instructions in this guide to remove the air ventilation filter
For your oil filer, use an oil filter wrench to remove the oil filter cover (not the traditional oil input cover)
You should see the oil filter attached to the plastic rod which is attached to the cover.
Pull the used filter and replace with the new one.