Differential service - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 05-05-2012, 08:57 AM Thread Starter
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Differential service

What do you use and how much? I have a 3:73 LS
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post #2 of 6 Old 05-05-2012, 09:24 AM
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Motorcraft 75W140 Synthetic with Motorcraft friction modifier. Put the friction modifier in first, then fill the rest with gear oil until it overflows out of the full plug. Then your good to go.



05 F250 FX4 Lariat, SCT Livewire, 155cc injectors, Gryphon FICM tuner, ARP studs, MTW Stage 2 Turbo, Riff Raff boots, Warren Built trans, PMF traction bars ,4 inch straight pipe, Sinister EGR delete, S&B CAI, N-fab bars, level kit, 5% limo tint, 35 Toyos and 20s, Recon smoked everything, Harley headlights, 5k HID's, Camlocker toolbox, lots more
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post #3 of 6 Old 05-05-2012, 09:27 AM Thread Starter
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hey i have another question does the left rear spin on the limited slip?
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post #4 of 6 Old 05-05-2012, 02:26 PM
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The limited slip powers both rear wheels up to the resistant capability of the clutches. If the clutches are wore out, you'll get the one peel wonder. Get a Detroit locker and be done with it

'07 F-250 PSD 4x4 . S&B, 5" exhaust, zoodad, blue spring, '03 Turbo, 6.4 starter, 2.5 f/coils, adj Trac bar, 2" r/add-a-leafs, egr delete, DC 185 alt, Procomp shocks, SCT SF3 tuner, F-Detroit Truetrac, R-Detroit Locker, 4:10 gears, LT315/70r17 Duratracs, Amsoil Gear lube, Amsoil FE ATF, Delo 400 LE 5w30 diesel, Delo ELC, archoil 9100/ar6200, bpd ficm, arp studs, oem gaskets, HD water pump, stc, plugs, stand pipes, 6.4 banjo bolts, monitor, new oil cooler, coolant filter
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post #5 of 6 Old 05-05-2012, 06:11 PM
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I agree. Put a Detroit and be done. That's my plan when I get the coin. I have the factory limited slip and I still get the one wheel peel.



05 F250 FX4 Lariat, SCT Livewire, 155cc injectors, Gryphon FICM tuner, ARP studs, MTW Stage 2 Turbo, Riff Raff boots, Warren Built trans, PMF traction bars ,4 inch straight pipe, Sinister EGR delete, S&B CAI, N-fab bars, level kit, 5% limo tint, 35 Toyos and 20s, Recon smoked everything, Harley headlights, 5k HID's, Camlocker toolbox, lots more
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post #6 of 6 Old 05-07-2012, 05:44 AM
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What diffs are you guys running? They are SO expensive for these trucks!

Colin
59-68Galaxies, Fairlanes
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