That warranty was probably needed to get folks on board with the t4's. I hope they are as dependable as the old t3 powertechs were. I have not had any issues with my 10 year old 4120. Those t4's are not cheap though, as it looks like the cost with 3 less hp (probably what it takes for the added emmisions control) is now $10k more than it was 10 years ago.
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