Gear Lube

daniel3507 · 07-26-2009, 10:03 PM

wanting to drain the rear diff and replace it with Amsoil. slightly confused though as to what fluid to add though. 80w-90, or 75w-90? and how many quarts does it take for the 8.8?

Rifleman · 07-26-2009, 10:54 PM

Bearing tolerances and seals have varied some over the years. Knowing the year the 8.8 came out of would help. You would use whatever they specified for the vehicle it came out of.

exbass94 · 07-26-2009, 11:19 PM

80w-90 and 75w-90 are almost the same thing. The 75w won't thicken up as much when it's freezing outside, but they're both a 90w (i.e. same thickness) above freezing.

07-26-2009, 10:54 PM	#2
Rifleman Member Join Date: Jul 2009 Year: 2006 Make: Ford Model: Ranger 4x4 XLT Posts: 259 Rep Power: 8 iTrader: (0)	Bearing tolerances and seals have varied some over the years. Knowing the year the 8.8 came out of would help. You would use whatever they specified for the vehicle it came out of.
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07-26-2009, 11:19 PM	#3
exbass94 Member Join Date: Aug 2007 Location: Guilford, CT Year: 2006, 1994 Make: Ford Model: Ranger, Explorer Engine: 4.0 SOHC, 4.0 OHV Class: 4x4 Used For: Pavement Poundin' Posts: 3,078 Rep Power: 21 iTrader: (0)	80w-90 and 75w-90 are almost the same thing. The 75w won't thicken up as much when it's freezing outside, but they're both a 90w (i.e. same thickness) above freezing. __________________ 2006 Ford Ranger Sport 4x4 2-dr Extended Cab, 46k miles 1994 Ford Explorer Sport 2-dr 4x4, 179k miles
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