This ExST has factory 4.10Ratio Diffs: Rear is LimitedSlip=TractionLok, Fore is OpenSlip Hubless=LiveAxle.
An Axle Inspection+GearOilChange should be done every 33kMiles\4~5Yrs; Additives+Lubes noted below.
Diff Rear
- Type = 4.10Ratio 8i8RingGearDiam 28Spline LmtdSlip 3i25TubeDiam ??i??Wh~WhLgth 3200LbCpty
- Ford# raxp-1831-j\zrhp-1831-j, CovrTag=s663a_4L10_8.8_oh28, DoorTag=d2_TractionLok
- Covr = 10Bolt wOut Drain
- FillPlug = ?i???oDia*??NPTpiMale*?.???Long*0i500SquareDrive
- Adtv = 4.000oz 0.125qt 0.118Lt FrictionModifier Required Ford# c8az-19b546-a Or AmsOil# SlipLock
- Lube = 57.60oz 1.800qt 1.703Lt Ford# 75w140.FullSyn Swapped To AmsOil# SAE250.FullSyn
Diff Fore
- Type = 4.10Ratio 8i8RingGearDiam ??Spline OpenSlip ?i??TubeDiam ??i??Wh~WhLgth 3200LbCpty
- Dana35.SLA=Short+LongArms.Hubless=LiveAxle, Used On 2001~2011 SportTrac+Ranger+MazdaB...
- Covr = 10Bolt wOut Drain
- FillPlug = ?i???oDia*??NPTpiMale*?.???Long*0i500SquareDrive
- Adtv = 4.000oz 0.125qt 0.118Lt FrictionModifier Optional Ford# c8az-19b546-a Or AmsOil# SlipLock
- Lube = 102.4oz 3.200qt 3.028Lt Ford# 80w90.BaseOil Swapped To AmsOil# SAE250.FullSyn
Links To Related Info
Thanks go to the brave souls who've preceded me in similar adventures & freely shared their experience:
- https://www.therangerstation.com/tech_library/axle_codes.shtml Diff Info
- https://www.hemmings.com/stories/article/ford-8-8-inch-differentials Diff Info
- https://www.explorerforum.com/forums/threads/8-8-axle-facts-and-swap-info.235261 Diff Rear Info
- https://thefabricatorseries.com/build-blogs/how-to-narrow-a-ford-explorer-88-rear-axle-part-1-prelude-and-qa Diff Rear Info
- https://www.therangerstation.com/tech_library/Ford-8_8-axle.shtml Diff Rear Info
- https://www.hotrod.com/articles/ford-rear-axle Diff Rear Info
- https://youtu.be/0OpzDnL7MsI?t=0 Diff Rear LubeChange+CoverRepair
- https://www.therangerstation.com/tech_library/rebuild_tractionlock.shtml Diff Rear ReBuild+UpGrade
- https://www.therangerstation.com/tech_library/dana_35_sla.shtml Diff Fore Info
- https://youtu.be/f0MhOijZS7o?t=22 Diff Fore LubeChange