Engine replacement with a modern technological device
In 2004, a new line of diesel engines was introduced "PUMPE-Düse" which used the most advanced technologies for increasing fuel efficiency and environmental purity in order to meet the latest standards for the purity of the exhaust. To comply with the norms, fuel is supplied to the combustion chamber under the highest pressure of 2000 atmospheres, which ensures a more complete combustion of fuel.
To reduce the noise of the engine, another system was used, introducing a small portion of fuel into the cylinder before the main portion is introduced. However, new engines demanded special fuel. Usually, when using the fuel inappropriately required, the engine ended its life with a serious breakdown.