Fender rust - Diesel Forum - TheDieselStop.com
1999-2007 General Questions General questions related to 1999-2007 Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.

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post #1 of 11 (permalink) Old 12-31-2018, 02:34 PM Thread Starter
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Fender rust

I have had these chrome trim strips on my truck for years and decided to remove them and clean. What I found is disturbing. I’m wondering what the best approach would be here, should I repair the rust spots and look for a better fender flare to cover the discoloration that is left behind. Or, find a different fender flare that doesn’t hold moisture. I’ve even considered replacing the fender entirely and eliminate the strips. Either way, they’ve got to go. I’m interested to hear your opinions.
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2001 Lariat, F250, 7.3, 6-speed, 3:73, Ford AIS, MBRP 4" turbo back, ATS ported housing, 205 t-stat, Infinity DX w/DP Tuner 80hp tow, coolant filter, Hutched & Harpooned, EGT & Boost gauge. Fuel Mavericks with 285/18, 86k miles(Jan-2017) Bought brand new April 2001.
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post #2 of 11 (permalink) Old 01-01-2019, 03:55 PM
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I don't think that you are going to find a fender flare that doesn't hold moisture. Still, I think that finding a fender flare to cover up that mess would be the way to go. It won't repair the damage and will not stop the damage from progressing to even worse, but at least it is an easy way to hide it for awhile longer. No one but you will know what is under there if it is well hidden.
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2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, Odyssey extreme 65-PC1750T batteries, Michelin LTX-MS2 rear tires, Sumitomo Encounter front tires, Shell Rotella Ultra elc, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 240,000 miles, repairs so far: two starters, batteries, cps, brakes, tires, alternator, ball joints, locking hub, wheel hub, AC compressor, serpentine belt, power steering pump, driver's side window, ignition switch, o-ring, Spectra premium radiator, water pump, fan clutch, fan blades, thermostat, thermostat housing, tensioner. Stolen twice so far, but recovered both times with major damage.

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post #3 of 11 (permalink) Old 01-01-2019, 04:27 PM
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Had a buddy that cleaned it, then used roll on bedliner over it.
I would at least stop the rust before covering.
Honestly, I'm afraid to pull my flairs off.

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1994 F350 7.3 PSD 4X4 ZF5 DUALLY
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post #4 of 11 (permalink) Old 01-01-2019, 04:59 PM
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Quote:
Originally Posted by aclasshog View Post
I have had these chrome trim strips on my truck for years and decided to remove them and clean. What I found is disturbing. I’m wondering what the best approach would be here, should I repair the rust spots and look for a better fender flare to cover the discoloration that is left behind. Or, find a different fender flare that doesn’t hold moisture. I’ve even considered replacing the fender entirely and eliminate the strips. Either way, they’ve got to go. I’m interested to hear your opinions.
If the trim covers the rust I would consider “0spho” to stop and prevent new rust, paint, and reinstall trim. I have used both ospho and por-15 with huge success on my restorations. Here is their web site/ use of ospho:

http://www.ospho.com/
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post #5 of 11 (permalink) Old 01-01-2019, 05:42 PM Thread Starter
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Appreciate the courteous replies. I'm going to talk to the body shop tomorrow and weigh a few options.

2001 Lariat, F250, 7.3, 6-speed, 3:73, Ford AIS, MBRP 4" turbo back, ATS ported housing, 205 t-stat, Infinity DX w/DP Tuner 80hp tow, coolant filter, Hutched & Harpooned, EGT & Boost gauge. Fuel Mavericks with 285/18, 86k miles(Jan-2017) Bought brand new April 2001.
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post #6 of 11 (permalink) Old 01-01-2019, 08:01 PM
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One thing worth mentioning.............and I know is not always possible— whatever application you choose for repair/and to rid off rust will depend an awful lot on storage and environment. While I will be pulling my bed and doing some resto this winter, road salt spray doesn’t bother me as I always rinse the undercarriage and my truck and my ‘59 Impala Sport Sedan stay parked in a heated garage (pole barn) which in itself does more to offset the cancer than anything else.
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post #7 of 11 (permalink) Old 01-01-2019, 08:32 PM
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There are many who say warm water washes to remove winter road salt spray actually speeds up the corrosive reactions.

I suppose the heated pole barn might allow the moisture to evaporate?
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post #8 of 11 (permalink) Old 01-01-2019, 08:37 PM
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There are many who say warm water washes to remove winter road salt spray actually speeds up the corrosive reactions.

I suppose the heated pole barn might allow the moisture to evaporate?
Otoh, I've "heard" of car washes using similar chemicals in the water to keep it from freezing.
Imo, best thing a person could do is undercoat. Even DIY with fluid film would be better than nothing.

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1994 F350 7.3 PSD 4X4 ZF5 DUALLY
PHP HYDRA, 6637, 3-4 DP TO STRAIGHT 4 BEHIND THE TIRE, 1.0 EXHAUST HOUSING, DIY D66 TURBO, FUGA E-FUEL, EBPV DELETE. Cooper discoverer AT/3'S.

2010 VW JETTA TDI DSG Kerma tune. Hankook ventus v2 concept 2.


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post #9 of 11 (permalink) Old 01-02-2019, 01:26 AM
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There are many who say warm water washes to remove winter road salt spray actually speeds up the corrosive reactions.

I suppose the heated pole barn might allow the moisture to evaporate?
Mine will dry it down super low humidity- grade covered in moisture barrier plastic, 2” styrene on grade & 4’ deep perimeter, 5” concrete with radiant floor heat. Nothing sucks moisture worse than a garage/building with gravel and or concrete and no vapor barrier at least around here in mid-Southern Illinois
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post #10 of 11 (permalink) Old 01-02-2019, 06:18 AM
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Otoh, I've "heard" of car washes using similar chemicals in the water to keep it from freezing.
Imo, best thing a person could do is undercoat. Even DIY with fluid film would be better than nothing.
Ha...I never even considered that possibility but it makes perfect sense from a business owner standpoint.
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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
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SOLD:
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post #11 of 11 (permalink) Old 01-02-2019, 10:04 AM
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But I've not found anything to confirm that yet. Lol

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1994 F350 7.3 PSD 4X4 ZF5 DUALLY
PHP HYDRA, 6637, 3-4 DP TO STRAIGHT 4 BEHIND THE TIRE, 1.0 EXHAUST HOUSING, DIY D66 TURBO, FUGA E-FUEL, EBPV DELETE. Cooper discoverer AT/3'S.

2010 VW JETTA TDI DSG Kerma tune. Hankook ventus v2 concept 2.


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