5缸舊D4真的比較吵。4缸新D4+8速真的好非常多(運轉質感，節能，性能)，V牌有在進步，作為老車主我很開心。
celestar wrote:
I am not sure if you are a true owner or not.
Diesel engine rarely goes up to 4000RPM.
Let me share with everyone the merits of Volvo 5 cyclinder.
It is the quietest engine diesel around. Compare with the new 4, you will know.
Besides, when the turbo kicks in, there is this musical sound of V8, ramping up, that is nice and excellent to hear.
Vibration wise, it is also very good. I just broke the 20,000km in 10 months, the engine is quieter now.
A suggestion, try the Formosa Diesel, it seems more smoother and quieter. Compared with CPC, my engine never cough on morning now, after the switch. I am conducting further testing to establish mileage gain or lost.
