Yes, the 6,4 trucks are great compared to their predecessors as to how they drive, tow, and noise. The 6.4 has a very bad design in their pistons causing them to crack. In my opinion, you're on borrowed time when you get to 200,000miles. I have 270,000 miles on mine. In October, of 2018, it blew a hole in a piston, 3 others are cracked. Rebuilt with International pistons, so it should last longer than i will own it. Knowing what I know now, I wouldn't buy one. My truck was deleted, both EGR and DPF, with a mild H&S Tune. It's a work truck that I actually babied. My backup work truck is an E99 with 372,000 miles on it. Been driving it since october. Not in a big hurry to get the 08 back.

 

 

 

 

Every Ford Super Duty line of trucks from model year 2005 onward, has access to engine hour count information available on the instrument cluster. What this means, is exactly how many total hours the engine has ran from since new. To put things into perspective, if you multiply the engine hour count by 25, that will provide you with the actual equivalent driven mileage wear is present on the engine. So let's say you retrieve the hour count and do the math, if the number you come up with is lower than the actual mileage on the vehicle, this means the vehicle has driven more than it has sat idling, which is better for the engine. As opposed to having a much higher count and driven mileage equivalent than the actual mileage on the vehicle. Hope that makes sense.

 

if the water pump does not cavitate
if the lifters do not grenade
if the bearings do not spin
if the cam does not get damaged by the lifters
if the push rods don't bend
fir the rockers do not drop
if the head gasket does not fail
if the egr does not leak into cylinder
if the injectors does not toruch a hole into the piston
if the fuel pump does not fail
if the coolant/oil cooler does not clog
if the radiator does not leak
if the fuel does not jel and starve the fuel system
if the rings don't break
if the heads don't crack

I read somewhere that the engine has a 50% chance of making it to 300k miles (which includes repairs as indicated above) before needing a rebuild.

 

my 2008 has 73,897 miles on it with 2,961 engine hours. By your calculations 2961x25=74,025. So that means my truck has some idle time? I wont deny that. But not much for 11.5 years old .

 

Nope. If the actual mileage and the calculated driven mileage wear equivalent are as close as yours are, I would consider that very optimum. I've seen my share of trucks with your mileage and as much as double the hour counts before.

 

What he said.

 

i can tell you where most of my idle time comes from too. Hooking/unhooking camper, parking camper, and some really cold day start ups.