2026-09-15
Lexus GX 460 Carbon Buildup – Port Injection, Very Low Risk
The 1UR-FE V8 uses multi-point port injection — not direct injection — meaning virtually zero intake valve carbon buildup. This is a major long-term advantage over turbocharged European equivalents. No walnut blasting or carbon cleaning is required throughout GX 460 ownership.
GX 460 Carbon Buildup
The GX 460 1GR-FE uses port injection — not direct injection. Carbon buildup on intake valves is not a known issue on the 1GR-FE. No walnut blasting needed under normal maintenance. Keep to 10,000 km oil change intervals with full synthetic 5W-30, and the GX 460 engine will remain clean and reliable.