Duramax was tested under hard use and given a "B10" rating of 220,000 miles. It was not B50 tested. That means 10% failed by 220,000 miles and 90% made it that far with no major repairs.
For comparison, here are some "B" ratings on other engines.
Ford (Navistar)Max-force 7- 6.4 liter. B10 262,500 miles (6,730 engine hours). B50 - 375,000 miles (9,600 engine hours).
Cummins 5.9 diesel has a B10 rating of 210-250,000 miles (6,400 engine hours) and a B50 of 350,000 miles (9000 engine hours).
Isuzu 6H diesel - B10 durability rating of 410,000 miles (10,000 engine hours)
International DT466E has a B10 of 300,000 miles (5200 engine hours), and B50 of 450,000 miles (11,500 engine hours).
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Today's Featured Article - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
... [Read Article]
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