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Old 03-11-2020, 08:20 AM   #1
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Buying a diesel?

Looking for a used F-250 diesel. How many miles is considered a lot for a diesel. Any advice on what to look for or how to get get a good price. Prices vary a lot for similar trucks with similar and varying mileage.
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Old 03-11-2020, 08:48 AM   #2
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Do your research and watch out for the 6.0 and 6.4 L as they've both had problems and need to be 'bulletproofed'. Prices can vary - cheap if it's a stock engine and more expensive if it has a number of 'deletes', head studs, etc.

I had a gold standard 7.3 that was a workhorse and is probably still running strong. My son currently has the 6.7 and he's very happy with it.

Depending on what you're pulling, don't rule out the Ecoboost. I have one in my F150 and also in my Expedition Max. They really have a ton of power.
Tom and Katharine
'07 Winnebago Tour 40TD, 400hp Cummins
'17 Winnebago View 24V, '02 R-Vision B+
RVing for 20 years & 200,000+ miles
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Old 03-11-2020, 09:07 AM   #3
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As noted, do not consider a 6.0L or 6,4L Ford diesel unless it has been properly "bullet proofed". The old 7.3L has been the gold standard for Ford. I have a 2012 6.7L and if has done good for 92000 miles, except for the DEF system.

Seems all are having emission control system problems since they were mandated.

Be sure and get the service records for the truck and see that it was properly serviced on a regular service. Clean fuel and oil are the life blood of these engine.

Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot
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Old 03-11-2020, 09:18 AM   #4
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While diesel engines will last several hundred thousand miles, there are many other items such as transmissions that will not last nearly as long. There are also costly external diesel engine parts such as the injector pump that will generally fail before the engine does. When buying a truck it will be the whole bundle, not just the engine.

I just bought a '96 Dodge 2500 with 120k miles which seems to be "low mileage" after looking at many with over 250-300k. My thought is that the lowest mileage you can find the better off you are. That also depends on care and maintenance, but in my mind is generally true.

1994 30' Monaco Dynasty, 5.9 230 HP Cummins, MD 3060, 1992 Geo Tracker.

1996 Dodge Cummins 2500 with 1996 Lance 945 camper
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Old 08-16-2021, 11:35 AM   #5
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I have a 7.3 with 240000 miles still getting it done.
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