2026-09-15
Lexus RC 200t & RC 350 Carbon Buildup – Walnut Blasting Malaysia
RC 200t (8AR-FTS) pure direct injection — significant carbon at 60,000–80,000 km. RC 350 (2GR-FSE) also direct injection — similar risk. Walnut blasting: RC 200t (4-cyl); RC 350 (V6). Symptoms: rough idle, hesitation, slight power loss. RC 300h (2AR-FSE port injection): very low carbon risk.
RC 200t Carbon Buildup
The RC 200t 8AR-FTS is a pure DI turbo — carbon buildup is expected by 60,000 km. Sports driving with frequent cold starts and short trips accelerates deposits. Walnut blasting every 60,000 km is recommended. The RC 300/350 2GR-FKS uses D-4ST dual injection — lower carbon risk, walnut blasting at 80,000 km is a precaution. After each walnut blast, change the engine oil and filter to flush any carbon particles that entered the oil.