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rear differential
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  1. General 6.0L Discussion
    Hey all, Do I have to add a friction modifer in my fear diff on my 2007 F250, 6.0. I plan on using royal purple 75w-140? I have read conflicting posts. Anybody use arch oil in any of their differentials? Can I use royal purple max at in my transfer case?
  2. General Diesel Discussion
    So im pretty sure my clutch packs are going out. And instead of replacing the actual discs and wear plates I was thinking about getting a different type of carrier that can substitute for limited slip and potentially be posi im stuck between Yukon and powertrax just looking to see if anybody has...
  3. General 6.4L Discussion
    I have an 09 F250 Lariat package 4X4 (non FX4 package). I was wondering if these trucks came with an actual electric locker in rear or if it's just a limited slip rear differential. Reason why I'm asking is I was testing my front hubs b/c the front was not locking and the rear axle seamed to...
  4. 99-03 7.3 Drivetrain Problems
    I've noticed that I have a leaking pinion seal. The rear differential is way overdue for a fluid change. Over the last month I inconsistently feel a shutter when I start from a stop with the wheels turned (usually a right turn). Recently, I was driving up a steep grade driveway at a very slow...
  5. Non-Powerstroke General Discussion
    Hey guys. Working on my rear differential. Ford/Sterling 10.25 - 91 F250 idi. 7.3. When i Removed the pinion seal, there wasnt much gear oil that had dripped out. (Less than a shot glass) and I recognized that more fuild had common drain out in some instructional videos I watched. Now keep in...
  6. General 6.0L Discussion
    I have 2006 F250 6.0. The rear end has just started to howl. It sounds like worn out tires on pavement, but makes the same sound when on a gravel road. It gets louder as I go faster, and there are no gear noised which are noticable, no grinding or anything. I checked the U-joints (no slack)...
  7. General 6.0L Discussion
    So far this is the cheapest that I have seen ALUMINUM REAR DIFF COVER FORD F-250,F-350,& EXCURSIONS | eBay Riffrafdiesel.com has one for ~$100 Riffraff Diesel: G2 10.5/10.25 Sterling Aluminum Diff Cover Has anyone bought either cover? If so, can you share your opinion? Do I need longer bolts...
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