We live in the world with accounting rules. As soon as LN extends the warranty, the accountants rules will cause them to hold a higher reserve for warranty repairs. Thus not as much profit and/or not as much money to invest in the next product. Eventually the IMS buys will dry up.
Having talked to the inventors, they have high confidence that the probable lifetime is ...
Heck, most of their dual rows are now beyond the 5 year point and I don't see any of the 5 forums I visit daily filled with tales of woe.
If I were making this choice, if I were investing in lots of preventative measures inside the engine, no doubt which I'd specify.
If I were to look hard at my situation and only see the car staying with me for 3-5 years it would be a different choice.
28 other failure points and driver error can total the car for practical purposes.
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