I am beginning to wonder if there is a hidden problem causing this? just saying the #1 rod failed do to lack of oil is not a good enough answer.if this was a design flaw then they would all fail.there has to be something to cause the lack oil. weak oil pump?improper bearing clearance ? the problem is once it happens it is too late to find out the problem.they replace it with a short block with a new oil pump.i will be installing an oil pressure gauge soon. i will also be getting the oil tested to see if there is excess bearing material.if there is i will be speaking to isuzu before the failure. i have not looked yet but if you can get to the rod from the bottom you can change the bearing before if fails. that is a big if. shawn