2026-10-08 · 5 min read
Nissan Navara Head Gasket Malaysia — YD25DDTi
YD25DDTi head gasket failures are known — primarily caused by overheating due to coolant neglect or a blocked radiator. Symptoms: white smoke from exhaust, coolant in oil (milky oil cap), bubbles in the coolant reservoir, rapid coolant loss. Diesel head gasket replacement is a major job requiring specialist tooling. Prevention: maintain coolant system diligently, never run without coolant.
Navara Head Gasket Awareness
- Prevention: always maintain coolant level and fix any overheating immediately
- Signs: white sweet-smelling exhaust smoke, coolant loss, overheating, milky oil
- Block test kit (chemical): test for combustion gases in coolant — confirms blown gasket
- Head gasket failure on well-maintained vehicles is uncommon — most failures are preventable