changing diff fluid - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 09-07-2010, 11:38 AM Thread Starter
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changing diff fluid

what type of oil is everyone using to flush there diffs? how many quarts ?

2005 F250 Harley Davidson C/C LB 4x4- ARP Studs, Elite EGR Delete, Hellaman Sump, Air Dog II, 6.4 Banjos, SCT w/ Tunes from Gearhead, Autometers, 4" MBRP Exhaust, Dieselsite Coolant Filter, RetroSolutions 6000K HID's, '08 Rear Leaf conversion from PMF with F350 blocks, AirLift 5000 AirBags , 2.5" Leveling Kit with bilstein shocks, 5% tints

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post #2 of 4 Old 09-08-2010, 04:33 PM
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I need to know which rear diff you have to let you know which fluid. For the front you need a GL-5 rated oil. AMSOIL offers a number of different options for this. I would recommend Severe Gear EP 75W-90.

Here is the capacities:

Rear Differential, With 10.50 RingGear..........3.5 quarts
Rear Differential, With Dana M80..........4.25 quarts
Rear Differential, With 10.25 RingGear..........3.5 quarts
Front Differential..........3 quarts
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post #3 of 4 Old 09-10-2010, 06:47 AM
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How do we find out which rear we have?
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post #4 of 4 Old 09-10-2010, 09:33 AM
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98 or older has the 10.25
99+ has a 10.5
99+ DRW has the Dana 80

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