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I noticed in the owner's manual to change the rear diff oil after 3 mos/3000 miles if we tow. Anyone have experience? Tools required? What kind of oil?
Thanks!
 

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Differential oil change

Targa Florio said:
I noticed in the owner's manual to change the rear diff oil after 3 mos/3000 miles if we tow. Anyone have experience? Tools required? What kind of oil?
Thanks!
Check the threads for "differential" should find some helpful info. I changed at about 3700. Nice and dirty with slimy residue and ionized "goo" stuck to the magnet (not sure if it was metalic). Needed a 10mm hex wrech and used Semi Synthetic Durablend. Uses just under 2 quarts. No thread sealer needed. No special pumps needed either.
 

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easy money

Very easy, only thing out of the ordinary is a 10mm allen wrench. Read threads on this. I used a old toothbrush to reach in a pull the last bit of nasty bottom sludge residue out drain hole.
 

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I also changed mine after my first tow, but I had the dealer do it. He commented that the oil they took out was very dirty. I just returned from a 2500 mile tow, I think I'm going to do it again (total 17,000 miles).

Keith
 

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Thanks guys. Does diff oil always smell so bad? BTW Redline spec'd their 75W90 synthetic for us.

I just squeezed the oil bottles best I could and got most of it in the box. Is that the way you do it?
 

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Done deal

Targa Florio said:
Thanks guys. Does diff oil always smell so bad? BTW Redline spec'd their 75W90 synthetic for us.

I just squeezed the oil bottles best I could and got most of it in the box. Is that the way you do it?
Done deal, not much to it. Squeeze till it comes out the fill whole. Just under 2 quarts. Can use different viscosities dependent on you local climate, check the manual (warmer climate, heavier oil) :temphot:
 

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Had both diffs and transfer case changed with Mobil Synthetics at 1500 miles. The gasket seal they use turns into goo that gets in the oil. If you change it, it will get the goo out and stay clean afterwards. I would say to change it early once and then follow schedule. ;)
 

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Suction Gun

Using a suction gun makes it go even easier if you don't have a pump. Getting the plug loose the first time is the hardest part, seriously. I couldn't believe the torque required to break it loose the first time.
 

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Targa Florio said:
I noticed in the owner's manual to change the rear diff oil after 3 mos/3000 miles if we tow. Anyone have experience? Tools required? What kind of oil?
Thanks!
So how often do we change if we don't tow anything?
 

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I have just changed the oil on the rear differential at 5k miles. I filled it with Mobil-One 75w140. The oil smells pretty bad and it was PITA to squeeze the oil from the bottle to fill up. I rather use a pump next time.
 

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Does a friction modifier need to be added to the rear differantial?
Most limited slip rear-ends need this additive. My local nissan dealer offered to sell me a "kit" for do it yourselfer's. The tech I talked with was about as sharp as a sack of wet mice. He couldnt give me a concrete answer as to whether or not an additive was needed. He then said Nissan has an additive for limited slip rear ends, but it wasnt vehicle specific. The additive alone was $40.

-Jeff
 

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cinco-cero said:
Does a friction modifier need to be added to the rear differantial?
Most limited slip rear-ends need this additive. My local nissan dealer offered to sell me a "kit" for do it yourselfer's. The tech I talked with was about as sharp as a sack of wet mice. He couldnt give me a concrete answer as to whether or not an additive was needed. He then said Nissan has an additive for limited slip rear ends, but it wasnt vehicle specific. The additive alone was $40.

-Jeff
We don't have a true limited slip differential; there are no clutch plates that require a friction modifier. No adatives are necessary or desired. Use a quality synthetic 75W140.
 

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so if we don't tow, when should we change the oil??? someone else had asked but he didnt get answered...
 

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scr38 said:
We don't have a true limited slip differential; there are no clutch plates that require a friction modifier. No adatives are necessary or desired. Use a quality synthetic 75W140.
75W-140? My '07 owners manual states 75w-90 synthetic for the rear and 80w-90 for the front.
 

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cinco-cero said:
75W-140? My '07 owners manual states 75w-90 synthetic for the rear and 80w-90 for the front.
Nissan changed the rear lube specs to synthetic 75W140 for the rear of the Titans. If you do much towing I would use that. I have Amsoil Severe Gear 75W140 in my Armada. If you don't tow the 75W90 will be fine. If you live in a warm climate as I do I think 75W140 in the rear is a good idea, towing or not.
 

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so we should change our oil every 3700 miles no matter if you tow or not???
 

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Do We Need it or Not?????

Gom said:
so if we don't tow, when should we change the oil??? someone else had asked but he didnt get answered...
I'll be the third to ask. If we don't use our Armada's for towing we need to change the diff oil anyway???
 

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I put in synthetic at 1500 miles. When they make the diffs, there is gasket goop in there. Changing the oil gets that and filings out. ;)
 

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Well I just returned from the local Nissan service department after having some minor issues taken care of. I talked with the lead master tech and he advised me that 75w-140 is recommended in the Armada if you plan on towing. He said Nissan made the change for the Titan trucks but hasn't been too pushy on recommending its use in the Armada, because not very many people tow in the "kid taxi, grocery getter" (as he put it) Armada. He said It will cause fuel mileage to drop a little, but I 'll trade off a little mpg for better protection any day. He said everything "recommended" by the manufacturer is just that, "recommended" for the best possible fuel economy. Under the absolute best conditions and the most basic use of the vehicle (kid taxi, grocery getting) 5w-30 motor oil and 75w-90 rear diff will get you the best mpg and average overall protection. He added, if it were him.... He would use at least 10w-30 and definitely 75w-140 in the rear diff. especially for towing.
 
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