Final answer:
Low ash engine oils for QSB3.3 and QSB4.5 CM2250 EC engines are designed to work with ultra-low sulfur diesel fuels, meet official oil change intervals, and help reduce particulate matter emissions.
Step-by-step explanation:
The question pertains to the type of low ash engine oils specified for the QSB3.3 and QSB4.5 CM2250 EC engines. These oils:
- B) Are designed to work with ultra-low sulfur Diesel fuels
- C) Are required to meet the advertised/official oil change intervals
- D) Help reduce engine particulate matter emissions
Advancements in engine oil technology have been tailored to work in conjunction with innovations in engine design that aim to improve fuel economy and reduce emissions. Specifically, low ash oils that are compatible with ultra-low sulfur diesel fuels play a critical role in minimizing ash deposits that can harm catalytic converters and diesel particulate filters, thus aiding in the reduction of particulate matter emissions. Additionally, using these specified oils is essential to achieve the manufacturer's recommended oil change intervals, which are based on rigorous testing and analysis.