October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Evaporative Emissions System: Maintenance

The charcoal canister is the only serviceable item. It should be replaced every 24 months or 30, 000 miles on Light Duty Emission models and every 24 months or 24, 000 miles on Heavy Duty Emission models. If operated in severe conditions, more frequent replacement may be required.