6.5 life span

[jard]

I have a 94 k2500 with a 6.5 turbo heavy duty, it has had the oil changed evry 2500 miles , has a exhaust up-grade and cooling up-grade, with a remote fsd cooler, my question is I have 147000 miles on the truck and tow a 10000lb fith wheel, how many more miles can I expect, and should I start looking to upgrade to a newer truck

[Cowracer]

Depends on many factors...

There has been 40,000 mile trucks with broken cranks, and I personally know of one 1993 truck with more than 195,000 miles(probably 200,000 now, I haven't seen the guy in a few weeks) on it that gets NO preventative maintanence. It maybe gets an oil change every 30,000 (yes, I said thirty THOUSAND) miles or so, and a new fuel and air filters whenever we get a new president, and it starts better than mine, and runs like an striped-assed ape. <sigh>

The general thought is with care and proper maintanece, 250-300k is not unheard of on the internals. The bolt on stuff usually isn't as 'robust. Of course, overheating, overloading and overuse of the loud pedal will take thousands off this.

It sounds like you are playing it right though. I would imagine that you should hit 200k with no major problems

Tim

[Dewey Faircloth]

Have a 94 C 2500 192,000 miles.Pull a 30 Holiday Rambler about 140,000 of those miles.Runs better each trip.

[gwaidman]

My mo-chine shows 304,693 km on the clock. I tow a 20 foot trailer with dirt bikes in the bed uphill (500km) in 90f heat every weekend. I really think that this truck gets stronger every time I get behind the wheel. It starts and runs better than most vehichles with 50k.

[tom.mcinerney]

Jim Bigley, TDP site founder, tore down an engine he'd built , after 100K Mi of moderately rigorous activity. There was no perceptible wear.
Another member recently replaced headgaskets on a '94/OR/'95 that had accumulated 195K Mi. The cylinder wall crosshatching was still visible.
At 175K Mi my '95 engine had no crosshatch showing on cly walls, but most cyls had only .002-.004" wear, one at .007" wear; cyl heads sealing, but some cracking.

I would only add(to previously posted comments) that with diesel combustion chamber pressures, air filtration can make a difference.