Attention: TDR Forum Junkies 
Sorry if the title is a little weird, but I thought it was funny!
I need a little help in diagnosing a weird shudder in my truck. I am sure it has something to do with my limited slip rear end. I am getting a bit of a shudder when I go real slow around corners. I am talking parking lot slow. I have never experienced the "chatter" from a differential without the proper amount of friction modifier.
I will give you a brief history of my rear differential.
1) 0-100,000 km's (62137 miles) factory diff fluid.
2) 100,000 km's (62137 miles) Changed to Amsoil 75-90.
3) 130,000 km's (80778 miles) pinion seal started leaking.
4) 139,000 km's (86370 miles) Added 1L ( 1 quart) of another brand of Synthetic diff fluid. Motomaster 75-90. It's a Canadian thing eh!
5) 140,000 km's (86991 miles) replaced pinion seal and topped up with Amsoil 75-90.
6) Added aprox 4 oz of friction modifier. This was not the original Mopar stuff but a generic friction modifier from NAPA. This did not help at all.
So this is where I am at. I am almost embarrassed to say I let my rear diff get about 1. 5L (1. 58 quarts) low. I am not sure if my "shudder" started after I added the Motomaster synthetic diff fluid or if stupid me has wrecked my limited slip clutches. I have also replaced all 3 u-joints and the steady bearing was replaced last summer if these are items at which could cause a slow speed shudder.
Should I just drain the diff fluid and start over?
Buy the Dodge stealer friction modifier?
Could it even be me applying a light amount of brake and I have an out of round drum?
I talked to Darren today from DTT to eliminate the possibility of the transmission. I am sure it is in the rear diff.
When I pull the diff plug the magnetic plug has very little of that gray metal paste from metals floating around in the fluid. Any tests I could do with the wheels off the ground? 100 figure 8's in the parking lot? That is another weird part of it. It does not do it when I do tight figure 8's. Only at slow speeds in forward and reverse, maybe 1-2 mph. Even does it in gravel/low traction conditions. Never when I am going straight ahead or straight backwards. I know it is kind of an odd problem and hard to describe unless you are driving the vehicle but give me your ideas or theories or ask about anything you are unclear about and I will see what we can do.
Just don't tell me I am a meathead for running 1. 5L low on diff fluid and have wrecked my limited slip!
Dana 70 3. 54... ... ... .....
I need a little help in diagnosing a weird shudder in my truck. I am sure it has something to do with my limited slip rear end. I am getting a bit of a shudder when I go real slow around corners. I am talking parking lot slow. I have never experienced the "chatter" from a differential without the proper amount of friction modifier.
I will give you a brief history of my rear differential.
1) 0-100,000 km's (62137 miles) factory diff fluid.
2) 100,000 km's (62137 miles) Changed to Amsoil 75-90.
3) 130,000 km's (80778 miles) pinion seal started leaking.
4) 139,000 km's (86370 miles) Added 1L ( 1 quart) of another brand of Synthetic diff fluid. Motomaster 75-90. It's a Canadian thing eh!
5) 140,000 km's (86991 miles) replaced pinion seal and topped up with Amsoil 75-90.
6) Added aprox 4 oz of friction modifier. This was not the original Mopar stuff but a generic friction modifier from NAPA. This did not help at all.
So this is where I am at. I am almost embarrassed to say I let my rear diff get about 1. 5L (1. 58 quarts) low. I am not sure if my "shudder" started after I added the Motomaster synthetic diff fluid or if stupid me has wrecked my limited slip clutches. I have also replaced all 3 u-joints and the steady bearing was replaced last summer if these are items at which could cause a slow speed shudder.
Should I just drain the diff fluid and start over?
Buy the Dodge stealer friction modifier?
Could it even be me applying a light amount of brake and I have an out of round drum?
I talked to Darren today from DTT to eliminate the possibility of the transmission. I am sure it is in the rear diff.
When I pull the diff plug the magnetic plug has very little of that gray metal paste from metals floating around in the fluid. Any tests I could do with the wheels off the ground? 100 figure 8's in the parking lot? That is another weird part of it. It does not do it when I do tight figure 8's. Only at slow speeds in forward and reverse, maybe 1-2 mph. Even does it in gravel/low traction conditions. Never when I am going straight ahead or straight backwards. I know it is kind of an odd problem and hard to describe unless you are driving the vehicle but give me your ideas or theories or ask about anything you are unclear about and I will see what we can do.
Just don't tell me I am a meathead for running 1. 5L low on diff fluid and have wrecked my limited slip!
Dana 70 3. 54... ... ... .....
ROTFLMAO
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