I just checked the rear diff on my 99 F150 w/9000 miles
I just checked my rear diff and my truck has 9000 miles and the diff was 1 full quart low ! I also checked to see if any leaks on rear wheel seals or anywhere but it was bone dry,dont they fill these fricken things from the factory,now im gonna check the front and also the transfer case,dammmmmm.
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1999 F-150 4x4,short box,step side,4.6l Triton v-8, A.R.E. hard cover,cab steps,SteelHorse bed rug (liner), Mobil 1 5w30 all the way!! more to come !
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1999 F-150 4x4,short box,step side,4.6l Triton v-8, A.R.E. hard cover,cab steps,SteelHorse bed rug (liner), Mobil 1 5w30 all the way!! more to come !
Ford leaves the fluids a little low when they ship from the factory. 1 pint of diff fluid accross a million trucks is $$$$$$$$. The dealer is supposed to check and top off all fluids as part of the new car prep, Ford (you) pay for. Normaly it doesn't happen. I found all fluids on my 99 PSD a little low.
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2001 Ford F150 Supercab 4.6L
Airlift Rear Suspention with onboard compressor
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2001 Ford F150 Supercab 4.6L
Airlift Rear Suspention with onboard compressor
I checked mine when it was brand new; 1 pt. or so low. The dealer check missed this, but they made up for it by wiping grease all over the steering wheel and inner door. 
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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.
I have an 01 with 9,800 mi. Should I have my fluid levels checked? I know if I tell my service dept. that they all ship low, they'll tell me I'm crazy, or it doesn't matter. Not only that, how in teh hell would I get it covered under warrenty?
-AR
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2001 F-150 XLT 4x4 Off-Road, SuperCab, Flareside, Black[*] 4.6L Triton V8 HPI[*] 5 Speed / 3:55 Reg. Axle[*] Keyless[*] Premium Audio CD
Mods:[*] K&N Cold Airbox / Throttle Body Mod.[*] 3" Cat-Back (No Muffler, Turn-Down)[*] Cranked Torsion Bars[*] APC XENON PLASMA Super Whites[*] Bugshield[*] Bedliner[*] Ventshades[*] Taillight Covers (Slotted)[*] Removed Mudflaps[*] "Light Argent" 4x4 Off-Road Decals[*] K&N & Flowmaster Stickers (Under the Hood)
Audio:[*] Clarion 6675[*] Rockford Fosgate 5x7's[*] Rockford Fosgate G360A2 Punch Amp[*] JL 12W3-D2 (Ported)[*]Viper 500 Alarm
Build Date: 8/23/00 (Kansas City Plant)
arobbins@mail.liberty.k12.mo.us
-AR
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2001 F-150 XLT 4x4 Off-Road, SuperCab, Flareside, Black[*] 4.6L Triton V8 HPI[*] 5 Speed / 3:55 Reg. Axle[*] Keyless[*] Premium Audio CD
Mods:[*] K&N Cold Airbox / Throttle Body Mod.[*] 3" Cat-Back (No Muffler, Turn-Down)[*] Cranked Torsion Bars[*] APC XENON PLASMA Super Whites[*] Bugshield[*] Bedliner[*] Ventshades[*] Taillight Covers (Slotted)[*] Removed Mudflaps[*] "Light Argent" 4x4 Off-Road Decals[*] K&N & Flowmaster Stickers (Under the Hood)
Audio:[*] Clarion 6675[*] Rockford Fosgate 5x7's[*] Rockford Fosgate G360A2 Punch Amp[*] JL 12W3-D2 (Ported)[*]Viper 500 Alarm
Build Date: 8/23/00 (Kansas City Plant)
arobbins@mail.liberty.k12.mo.us
On top of page 262 of my 2001 F150 owner's guide, it says to fill " the axle 6-14 mm (1/4- 9/16 inch) below the bottom of the filler hole"...... This referred to 8.8 " and 9.75 axles. A few months ago at about 8k miles, I checked my level and it was 3/4 "


