• Zarejestrowany: 28.05.2023
  • Posty: 1

Temat: QR25DE valve recession

hello, I have Nissan Altima 2017 2.5L QR25DE engine fitted recently with LPG system, but I heard this engine has a problem with exhaust valve recession (or burned) because of LPG, any advise to protect these exhaust valves ?

thank you

2 Odpowiedź przez czesio

  • Zarejestrowany: 10.09.2008
  • Posty: 3,366

Odp: QR25DE valve recession

Hello, good engine protection is to use lubrication. For example, tunap 163, tunap 164 fuel additives. But the most important thing is to check the valve clearances from time to time. If I were you, I'd do it every 30-50 thousand km. In this case, the engine will run for a long time without any problems