Gear Oil

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03-03-2010, 04:15 PM

jkelley3209

Thread Starter

Join Date: Mar 2010

Location: Texas

Posts: 4

Gear Oil

What gear oil should I use for 4.10 gears?
75w90 or 75w140

03-03-2010, 07:35 PM

Rubrignitz

5th Gear Member

Join Date: Jul 2007

Location: TX

Posts: 4,897

I use 75w140 and think that is the general consensus.

03-04-2010, 08:51 AM

ShadyNinja

4th Gear Member

Join Date: Jun 2007

Location: Chicagoland

Posts: 1,257

I don't know why Ford says 75w140.(there must be a reason)
but thats what I used

03-04-2010, 03:49 PM

jkelley3209

Thread Starter

Join Date: Mar 2010

Location: Texas

Posts: 4

alright well thanks guys

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