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Discussion Starter · #1 ·
I just bought my Titan LE last friday. I'm selling my 2k1 Durango tomorrow. I haven't had an ounce of trouble until tonight. When I turn sharp left or sharp right, I'm getting a sound from the rear end that sounds alot like the tires are rubbing against something. They aren't. Nothings loose and the tires feel solid. I don't have a torque wrench to check the lugnuts, but the wheel is really tight. I had the differential fluid changed to Amsoil Series 2k 75-90 about 8 months ago. Sometimes it's loud, others you can hear it at all. I have 40k on it. I stopped by a local shop and took 2 techs out for a spin and they had no idea what it could be and didn't want to comment without checking it out thoroughly. Any ideas on what it could be? Bearings maybe?
 

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This problem is on the Dodge? Ah, you may luck out, but this is a Nissan Titan site????
 

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Discussion Starter · #4 ·
I took it to the Dodge dealer today and he immediatley told me to put 2 small bottles of friction modifyer in the rear limited slip. I didn't have a chance to do it today, but will do it tomorrow or saturday. If that doesn't cure it, he said they would have to fix something small in the diff, but he was sure the modifyer would cure the problem.
 

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Hey virus, Amsoil Series 2K 75W-90 shouldn't require any friction modifier but that might be the cheapest route to go. I'm assuming you have a limited slip differential in your Dodge, if so go into a big parking lot and do about a dozen tight circles in both directions. Not with tires smoking either... :D This will ensure the clutch packs loosen up and get the required fluid between them.

Other than that a bad wheel bearing comes to mind too. Good luck and let us know what happens.
 

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Discussion Starter · #6 ·
Well it's added and I did what you said. Absolutely quite as a mouse now. I do have a limited slip. The guys on the Dodgetrucks forum also said that the Amsoil S2k didn't require a friction modifyer. The fluid felt a tad bit low, but I also had it on a slight incline so that I could add the 10 ounces of the modifyer. What exactly is a friction modifyer?
 

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hey Virus, glad it worked out for you. Friction modifier is an additive oil that is designed to keep the limited slip clutch packs from chattering and binding. It keeps the coefficient of friction where it should be for the clutches.

You will not need anything other than gear fluid for the Titan because it does not have a mechanical limited slip differential. They all are technically "open" differentials.
 

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You will not need anything other than gear fluid for the Titan because it does not have a mechanical limited slip differential. They all are technically "open" differentials.
Thats our JT, he is so smart!!!! :D
 

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Discussion Starter · #10 ·
JetTech said:
hey Virus, glad it worked out for you. Friction modifier is an additive oil that is designed to keep the limited slip clutch packs from chattering and binding. It keeps the coefficient of friction where it should be for the clutches.

You will not need anything other than gear fluid for the Titan because it does not have a mechanical limited slip differential. They all are technically "open" differentials.
What weight should I use? How much will I need for the front and how much for the back?
 

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you will need at least 4 quarts to do both and that's only if you can get every drop out of each container. I would suggest buying 5 quarts of Mobil 1 75W-90. That will give you a little left over because the rear will take a little over 2 quarts and the front a little less than 2 quarts. Get 5 quarts because you'll want to do this again around the 5 or 10K mile mark just to make sure all the shavings are out of the rear diff.

When I drained my front diff the oil looked brand new, but when I did the rear it looked like it had been in there for 50K plus miles. It was nasty and the drain plug was VERY hairy with shavings. So I would highly recommend doing it either at 5 or 10K miles again just to make sure you get all the junk out the diffs, especially the rear!!!
 

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Discussion Starter · #13 ·
I guess I should look before asking, but it's too late, I'm going to ask. You mentioned the Titan has a drain plug. Where is it located in the front and back? Once I change at 5 and 10k, how long should the Mobil 1 last. The Amsoil should last 2-3 times the normal drain interval unless metal shavings prohibit that.
 

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Virus said:
I guess I should look before asking, but it's too late, I'm going to ask. You mentioned the Titan has a drain plug. Where is it located in the front and back? Once I change at 5 and 10k, how long should the Mobil 1 last. The Amsoil should last 2-3 times the normal drain interval unless metal shavings prohibit that.
The best thing to do is look at my picture link below my signature. There you will find pictures of where the drain plug is and what you will need to remove it.

On the front you'll have to remove a small skid plate to get access to the fill plug.

Mobil 1 has come a long ways in extended drain intervals as compared to Amsoil. The only reason I mentioned about doing it at 5 and 10K is to just flush out the remining filings in the differential, not due to the type of oil used.

If you need more detailed pics of the front differential I can do this tomorrow night and put them on my pic site for you. Just let me know and don't hesitate to ask anything. We all had to start somewhere... :)
 

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Discussion Starter · #15 ·
I bought some Mobil 1 75w-90 gear lube and had a local shop change it out for $19! It was a tad low. The front had some metal shavings, but the rear had virtually none. The rear fluid was quite dark however. The front and rear were also a tad low in fluid. The Titan is much easier to drain than the Durango was. The Durango requires taking the differential apart or sucking out all of the fluid.
 
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