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  #1  
Old 11-30-2010, 12:24 AM
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Need some lubrication information.

I will be replacing all the lubrication in my 2001 4x4 Excursion this weekend and I need to know what lubrication each of the different area's take and hopefully how much of it they take.

I know the Transmission will need about 20-22 quarts of Mercron 5.

I need to know what fluid the front and rear differential takes as well as how much I should buy.

I need to know how much lubrication and what type the transfer case takes.

I also need suggestions for the brand of oil that I should use. I won't be using exotics (AMSOil, etc). I need oil that easily locatable at my local Napa, AutoZone, Checker Auto, Ford Dealer, or Walmart. I'm leaning toward the synthetic Mobile 1 for the differential (if that will work)??

Anyway, thank you for your help. I don't have a manual or I could look this up myself.
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Old 11-30-2010, 12:52 AM
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Sorry but what first came to mind is what WM has in the pharmacy.



The rear diff takes a syn and the front is standard gear oil

Fluid - Differential

Note:
Front Differential SAE 75W-90
Rear Differential SAE 75W-140 Synthetic

Note: The axle lubricant should be changed any time the axle has been submerged in water. Add 4 ounces of friction modifier additive C8AZ-19B546-A, Ford Specification EST-M2C118-A for complete refill of Traction-Lok axles. Refill capacities are determined by filling the axle 1/4" - 9/16" below bottom of fill hole.


Fluid - Transfer Case

CAUTION: If the proper rill procedures are not followed, a transfer case failure can result.

NOTE: Fluid level must be just below the fill plug.

Remove the fill plug from the rear of the transfer case and check the fluid level.
-If the fluid is below the level, fill with Motorcraft MERCON(R) Multi-Purpose Automatic Transmission Fluid XT-2-QDX or MERCON(R) equivalent.



Im a Rotella or Motorcraft 15w40 oil person. but others will chime in on the syn oil.
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Old 11-30-2010, 04:10 AM
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I can look this all up at work if you want later. We have a computer system that gives us capacities and fluid types. If you wanna wait till about 7 I'll reply with what I find.
Transmission: Takes about 18qts for a full system of Mercon/Dexron III. No need to use Mercon V. Ford says it's ok, but I wouldn't. No point in it anyway.
Front Diff: Jarrod's answer. 75-90 GL-5 Gear Oil.
Rear Diff: Jarrod's answer. 75-140 Syn. I've got Schaffer's in mine.
Transfer: Jarrod should be right again.
Oil: I have always had Rotella 15-40 in it with 300k miles. But since you're in colder weather, Rotella 10-30 would help cold starts and such. The Rotella 5-40 is really good stuff. But just make sure you don't decide that since it's synthetic, you can go forever on it. 7k at the most. I'd say every 5k still because the HPOP shears that oil fast.
As a side note, you CAN put synthetic where ever you want. Even if it calls for regular, you can put syn in it. Think, your oil says regular. But then it's better for it if you put in syn. So either way it's fine. But if it calls for syn, then use it.
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Old 11-30-2010, 01:38 PM
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Thanks Both of you. Yes if you could look up the capacities for me that would be great. I'm not doing the changes until this saturday so I've got time.

The transfer case oil appears to just be Mercron III ATF? Am I wrong?

Dang those oil numbers are weird. Why in the world would the front diff take different oil than the back? Very strange. I really wanted to put the same in both ends just for consistency?

Last edited by Woody_PSD; 11-30-2010 at 02:01 PM. Reason: can't spell
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Old 11-30-2010, 01:49 PM
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I used royal purple in the rear cause it already as the friction modifier in it. I didnt do the front so Im not sure why it would be different?
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Old 11-30-2010, 02:04 PM
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Welcome to guzzle's Rear Differential Maintenance Web Page
Welcome to guzzle's Front Differential Maintenance Web Page
Welcome to guzzle's Transfer Case Fluid Change Web Page
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Old 11-30-2010, 03:07 PM
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Thanks Jarrod!
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Old 11-30-2010, 03:33 PM
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Yea no reason you can't make the front same as the back. So me forgot capacities.
Rear is probably 3-4 qts. Mine was 4 I think, but it's a Dana 80. Front is probably 2-3. If you buy extra you can always return it.
We use an evacuator at work. Just works off shop air and sucks out most of it. Pulling the cover gets it all. The only part I don't agree with is the plug. No reason to Teflon tape it. Clean it off, put it in, snug it down.
Tcase is the normal Dex III.
If you drain/drop the trans pan it takes 12.89 pints to refill. So 6.5 qts.
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Old 11-30-2010, 04:52 PM
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Ok, thanks.
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