2025-01-15 · 5 min read
Proton S70 Carbon Cleaning Malaysia
S70 1.5T: direct injection — carbon on intake valves at 60,000–80,000 km. 3-cylinder: slightly less displacement = slightly less carbon vs 4-cyl DI at same mileage. Walnut blast. City driving builds carbon faster.
S70 1.5T TGDi is direct injection — carbon buildup on intake valves from 60,000 km. 3-cylinder engines run at higher load per cylinder which can accelerate carbon slightly. Walnut blast recommended at 60,000–80,000 km. Cost: RM 700–950 (3-cyl has fewer valves than 4-cyl, so slightly cheaper).
Carbon Buildup — Proton Engines Malaysia
The X50/X70/X90 1.5T TGDI uses direct injection — more prone to intake valve carbon buildup than port-injected engines. Short city trips without occasional highway runs accelerate buildup. Every 3–6 months, take a 30-minute highway run at 3,000+ rpm to burn off deposits. An intake cleaning service (RM 200–400) every 50,000–80,000 km is worth considering. Saga/Persona with port injection have much less carbon risk — only standard service needed.