2026-09-15
Lexus GX 460 Timing Chain – No Belt, Lifetime Chain
The 1UR-FE V8 uses a dual-row oil-lubricated timing chain — no timing belt ever. Chain stretch is extremely rare with regular 5W-30 oil changes. The GX is one of the most mechanically durable Lexus models — the V8 chain is designed for 300,000+ km service life.
GX 460 Timing Chain
The GX 460 1GR-FE 4.0L V6 uses a timing chain — no belt to replace. The 1GR-FE is renowned for its durability in demanding environments. Use 5W-30 full synthetic and change every 10,000 km. VVT actuator health depends on clean oil; sludge from extended oil changes causes VVT noise and chain guide wear. At 150,000 km+, inspect timing chain tensioners during any major engine work.