Gear Fluid?

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07-18-2010, 03:08 PM

#11

Goldenpony

5th Gear Member

Join Date: Jun 2005

Location:

Posts: 3,319

Quote:

Originally Posted by bilbob2

Hrm someone else is telling me it is
3 quarts 75w90 gear oil

Do manuals and autos use different oils or something?
Mine is a manual.
Ack! I can't find out which one I need for sure!

Actually, autos and manuals both use ATF.

08-01-2010, 07:12 PM

#12

wcgman

5th Gear Member

Join Date: Mar 2006

Location: Colorado

Posts: 2,652

Guy who installed my 4.10's insisted on royal purple which he let me pick up...im cool with it. no noise.

08-01-2010, 11:16 PM

#13

Gene K

5th Gear Member

Join Date: Jun 2007

Location: Decatur AL USA

Posts: 2,176

If you use Motorcraft 75W140 you need two quarts plus the little bottle of XL3 friction modifier (for the clutches).

You will also need something to clean the old silicon off the rear cover. Thats assuming it was sealed with silicon like the factory does it (gaskets are old school).