What is the most reliable Mercedes diesel engine?
What is the most reliable Mercedes diesel engine? Produced between 1974-1991, Mercedes-Benz loaded their 300D with a cast iron 3. OM617. A five-cylinder engine to replace the outgoing OM616 quickly garnered a reputation for reliability, with many fleet vehicles approaching 620,000 miles as time passed. OM 656. The new six-cylinder in-line diesel engine OM 656 […]
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