1999 - 2003 7.3L Power Stroke Diesel

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Old

Mar 23, 2009 | 09:44 AM

#1

throwdown

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Senior User

Joined: Oct 2008

Posts: 466

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From: Ontario, CAN

Club FTE Gold Member

Best Diff Fluid

I have to R&R front axle seals. Good time to upgrade fluids. Any recommendations?

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Old

Mar 23, 2009 | 10:06 AM

#2

03_PSD

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Joined: Nov 2006

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I put mobile 1 syn in both mine.

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Old

Mar 23, 2009 | 12:49 PM

#3

throwdown

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Senior User

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Posts: 466

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From: Ontario, CAN

Club FTE Gold Member

What's the proper weight?

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Old

Mar 23, 2009 | 12:52 PM

#4

03_PSD

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Joined: Nov 2006

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Guzzel's web site is great to bookmark and use for future reference:

Welcome to guzzle's Ford PSD Web Pages

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Old

Mar 23, 2009 | 01:41 PM

#5

DieselCamper01

Fleet Owner

Joined: Mar 2007

Posts: 28,280

Likes: 6

From: BLT, MN

I used Royal Purple. Don't know if it is the best but it is good.

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Old

Mar 23, 2009 | 02:45 PM

#6

mjtpolice76

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Joined: Dec 2005

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Amsoil is what I use

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Old

Mar 23, 2009 | 03:26 PM

#7

triskit16

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Joined: Sep 2008

Posts: 3,220

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From: VA

I believe my manual for 2000 SAYS 75-90 for my front and 75-140 for rear. But like other things(like the ATF) Im sure they change.

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