99 7.3 L turbo 315,000 miles life expectancy - Ford Powerstroke Diesel Forum

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post #1 of 12 Old 12-14-2009, 09:45 AM Thread Starter
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99 7.3 L turbo 315,000 miles life expectancy

I am considering the purchase of a 99 F-350 4x4 which is in pretty good shape overall. Started at 27 degrees without complaint and drives out well.
My main concern is the engine having over 300K on it. While it it seems strong and has good maintenance records, no apparent leaks save a little from the rear main, but not heavy.
I would expect to drop a bunch or $$$ in the next year or so, but am looking for what others have experienced for high mileage.
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post #2 of 12 Old 12-14-2009, 10:07 AM
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dont worry about it. it will last a life time. what are they asking for it? auto/manual? dually? did they tow with it?

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post #3 of 12 Old 12-14-2009, 10:26 AM Thread Starter
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99 7.3 L turbo 315,000 miles life expectancy

$6500 with a decent working snowplow.
not a dually
has not seen heaving towing, never had a 5th wheel installed
125K on rebuilt auto-trans from a 1st rate rebuilder.
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post #4 of 12 Old 12-14-2009, 07:10 PM
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The 7.3L is known for everlasting life with good maintenance, I've heard an upwards of 500,000 to 700,000 miles, but never seen it first hand.
Most people think like gassers, and trade them in at 100,000, but this motor is just getting broken in at that.

My Y2K has 265,000 and I plan to keep her strokin at least that many miles more, (I paid 8K for mine).

I would look at the front springs, with a snow plow on it like that the springs would really sag unless their already upgraded for the weight.


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post #5 of 12 Old 12-14-2009, 11:20 PM
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I doubt its even the rear main leaking. Probably residual leakage from somthing in the valley. Any oil collected in the valley from pedastal o-rinhs or from the HPOP will drain down the back and always "appear" to be a rear main leak. Almost never is though.

TRUCK - 2000 Ford PSD 7.3 XLT, Midnight blue, ext cab, short bed, auto 4X4,Leveled front +2 In rear, SCT Livewire INNOVATIVE Tuned, Full 5in exaust, AFE stage2, BANKS TransCommand, 2 optima yellow tops.......more to come!

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post #6 of 12 Old 12-15-2009, 06:20 AM
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At that kind of mileage you have to expect to replace parts. Nothing " lasts a lifetime" that is made by man and put into a automobile. I have seen plenty of 7.3's with 500k+ on them and one over 800K and have read of several in magazines with over 1 million miles!! All on stock drivetrain minus auto trans.

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post #7 of 12 Old 12-15-2009, 06:54 AM
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I doubt the rear main leaks. If it runs good and drives good scoop it up
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post #8 of 12 Old 12-15-2009, 07:04 AM
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wouldent bother me!

my 02 has 231k

02 f-250 4x4 ext cab long bed
64 nova 400, no post with a 350
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post #9 of 12 Old 12-15-2009, 07:08 AM
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go for it! thats nothin!

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post #10 of 12 Old 12-15-2009, 12:12 PM
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aww buy it. even though the trans has been rebuilt, that big plow is really hard on autos.
XLT or XL? what cab and bed configuration?

dont worry about the 7.3. that parts fine lol they do leak a lot up in the valley from many different places.

95 reg cab 4X4 STROKER < trade for 5 speed???
new E40D
Autometer gauges
Gearhead tunes
EBP actuator deleted but not gutted
Push button start
TC lock up switch
DIY with 6637
3.5in DP
5in MBRP
315/75/16 M/T ATZ
3:55
smoked lights
herculiner
10inch PRO JL
20%tint

screw all this I just want a 6.4!!!!!!!!!!!!!!
wish list;
5 speed swap
stage 2 injectors
D66

"there may be snow on the mountain but that doesnt mean theirs no fire downstairs"
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