Ded byter alltså tillbaka till gråjärn i blocket istället för CGI. De små förbättringarna som man kan se beror till största delen på en ny växellåda.

Anledningen? Tja snålhet skulle jag vilja påstå

Såhär skrev Steve Dawson Sintercast i sin Q4 rapport 2024

From the Q4 report of Sintercast which was the techprovider of the engine

At the outset of the programme in the fourth quarter of 2018, the OEM decided to maintain the previous generation machining line that was designed for conventional cast iron. The higher strength and stiffness of CGI required slower cutting speeds and this resulted in a reduction in machining capacity. The OEM has now redesigned the engine and reverted to conventional cast iron to recover machining capacity. Other OEMs upgrade the machining line when upgrading to CGI in order to maintain, or increase, capacity. The lack of machining upgrade in this one case has not otherwise been a limiting factor

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En ny film på YouTube

Worse mileage in the new Cummins.

Lower combustion pressure due to the weaker material in the block. Remake, make right. Back with the CGI.

A difference in mileage of 13,6 % is really remarkable.

The higher consumption the higher CO2 emissions.

The new pressure is 15 % lower than the old. Quite big change