22,500 miles (36,000 km) or 18 months
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Scheduled maintenance service / 22,500 miles (36,000 km) or 18 months
❑ Inspect air cleaner filter ❑ Inspect vacuum hose ❑ Replace engine oil and filter (22,500 miles (36,000 km) or 36 months)
See also:
Exhaust Pipe and Muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration,
or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten
connections or replace part ...
Evaporative Emission Control (Including ORVR: Onboard Refueling Vapor Recovery)
System
The Evaporative Emission Control System is designed to prevent fuel vapors from
escaping into the atmosphere. (The ORVR system is designed to allow the vapors from
the fuel tank to be loaded into ...


