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How much gear oil?

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Old 11-29-2003, 10:40 AM
Join Date: Dec 2001
Location: Upstate, NY
Vehicle: 1998 Ford F-150 4X4
Posts: 97
How much gear oil?

How many quarts will i need to fill my rear diff, 98 4.6/auto/4x4 3.73. Nothing heavy duty, no trailer towing ect..

I read a few threads but can't find an amount. I picked up two quarts, (Valvoline synthetic), but have a feeling i'll need more. (Rusted through cover.)

98 F-150 Supercab 4X4
Pioneer 6400 with XM
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Old 11-29-2003, 10:58 AM
Technical Article Contributor
Join Date: Oct 2003
Location: Topeka Kansas
Vehicle: 1999 Ford F150
Posts: 1,490
I have a 1999 F150 Lariat 4x4 extended cab with the 9.75 axle. Haynes manual specifies 5.7 pints or about 3 quarts.
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Old 12-01-2003, 07:32 PM
Senior Member
Join Date: Jun 2002
Vehicle: 2002 Ford F-150 5.4L
Posts: 4,224
Fill it till it starts running out the hole...
'02 F150 XLT 4X4 SCrew. 5.4L

K&N FIPK/Amsoil Filter
Flowmaster 40 si/do Exhaust
305/70 16 GY MTR Kevlar
16X10 MB Motorsport wheels
4.10 Gears
Rancho 4" lift
Rancho 9000XL Pro Series Resi Shocks
FireStone Air Bags
Autometer Carbon Fiber Oil/Trans Temp Gauges
Carbon Fiber Interior (
Peterson Fluid Sys. Remote Oil Filter
Troyer Performance Electric Fans
Underdrive Pulleys
Amsoil Fluids Throughout
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Old 12-02-2003, 02:01 AM
Senior Member
Join Date: Apr 2001
Location: south western NYS Latitude: 42.34 N, Longitude: 78.46 W
Vehicle: 1996 Ford F-150
Posts: 918
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Originally posted by Galaxy
Fill it till it starts running out the hole...
It is really that simple, excellent answer!!!!

"Sex is like a euchre card game if you don't have a good partner then you better have a good hand"

1996 F-150 XLT 4X4 5.0 Longbed REGULAR CAB, auto, western plow, 2007 ford five hundred awd cvt loaded limited... titanium green metallic, tan leather..
2002 rav4 4x4
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