Definition
Reduces carbon buildup on direct-injection intake valves.
Must be drained periodically in high-mileage or boosted applications.
Maintenance
A container collecting blow-by vapors from the crankcase before they enter the intake tract.
Reduces carbon buildup on direct-injection intake valves.
Must be drained periodically in high-mileage or boosted applications.
Category: Maintenance · Updated August 31, 2026