I'm getting ready to do a 90,000 mile service, and in my maintenance booklet it says under the heading "Engine Compartment" to "replace activated charcoal filter" Every 75000 miles/120000km/4 years.

Since I am almost certain that the cabin filter has no charcoal filter, I must assume that this refers to the emission control charcoal filter.

Has anyone replaced the charcoal canister as a part of preventive maintenance? Is theis the actual part that the manual is referring to?

Thanks,
Troy
1995 E420 88k