Quote:
Originally Posted by Mike C
You can attribute some of it to newer oils (compared to stuff in the 70's and 80's) as well as his rigorous maintenance schedule, but the main factor is probably fuel injection. Never washing the cylinders down or running too rich contaminating the oil and removing lubrication from the cylinder walls.
I've seen quite a few 200,000 mile Nissan 2.8L 6 cylinders that you could still see the cylinder cross hatch in. FI amazing for helping engines last.
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I agree 100% about the fuel injection. The pic below is of my 2006, 5.3 with 120k miles. Pulled the heads because I had burnt some valves because I couldn't keep my foot out it when hauling a trailer. 11 pounds of boost and stock valve springs wasn't a smart move, but I was impressed how clean the cylinder walls were. You can see the cross hatch and this motor has had a blower on it for probably 80k of those 120k miles.
