Leaky front diff
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Junior Member
Joined: Jun 2016
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Leaky front diff
2016 Lariat w/ 5.0 here...anyone experienced having a leaky front diff on their F150s?
Up here in Alaska, pretty much have to leave it in 4wd all winter. It's not a big deal right now since I don't need it, just irritating that it left a mark in the garage and have to schedule it to go in for the warranty repair at 17K
Up here in Alaska, pretty much have to leave it in 4wd all winter. It's not a big deal right now since I don't need it, just irritating that it left a mark in the garage and have to schedule it to go in for the warranty repair at 17K
5 Year Member
Joined: Sep 2015
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From: USA
Is it leaking at the cover or at the axle shaft seal? Mines leaking at the passenger side shaft seal but from what I've read the outer seal is just for dust/dirt and it must be the inner seal that's allowing fluid through.
Senior Member
Joined: Sep 2015
Posts: 487
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Sounds like this SSM applies to you:
SSM 45087 - 2009-2015 F150 4x4 Front Pinion Bearing Damage
If pinion bearing damage is noted during the repair of the Front Axle on 2009 -2015 F150 4x4 units operated in severe cold climates. Use Motorcraft XY-75W85-QL Synthetic Hypoid Gear Lubricant upon reassembly and fluid fill. The lube will offer better pinion bearing lubrication in severe arctic conditions. Only a small number of units operated in the most severe climates will benefit from the using the synthetic lube. Do not replace the lube unless you have identified a concern with the pinion bearing.
SSM 45087 - 2009-2015 F150 4x4 Front Pinion Bearing Damage
If pinion bearing damage is noted during the repair of the Front Axle on 2009 -2015 F150 4x4 units operated in severe cold climates. Use Motorcraft XY-75W85-QL Synthetic Hypoid Gear Lubricant upon reassembly and fluid fill. The lube will offer better pinion bearing lubrication in severe arctic conditions. Only a small number of units operated in the most severe climates will benefit from the using the synthetic lube. Do not replace the lube unless you have identified a concern with the pinion bearing.