I bought my truck with 16,000 miles on it. I now have 16,787. I want to check the lsd. It feels like a slight shudder in slow turns.My Dad thinks a service will cure it. Plus I don't think the dealer did one. So I'm going to service the diffs this weekend.

Can I use synthetic in the front axle? Today I bought the lsd additive for the rear. I asked the parts counter at dodge, but she looked at me like I was stupid. I guess I will go to auto parts store and get the oil. I read it calls for synthetic 75-140 for the rear, but regular 75-90 for the front. Do you guys use gaskets or just sealer on the covers?

Also the only thing I can find (in the owners manual) on the automatic trans and transfer case says to service at 60,000. Is that right? I thought it was 30,000.
Thanks, Nick

 

U can use just sealer, dont forget the additive if you have the LSD in the rear!

 

i put syntetic in both front and rear on mine never had a problem

 

At 412 miles, not worried yet, but what's this about an additive if you have limitied slip?

 

when you service your rear if you have lsd you have to put an additive in to keep the clutches lude up

 

it's just a friction modifier for the clutches....i'd check and see what axle you have in the front, cause one says to use it and the other doesnt.....prolly be ok using it tho

 

I was under the impression that if you use Royal Purple that you do not need to add the friction modifier.

 

i wouldnt trust it....specially if still under warranty then deffinitly add the LSD modifier......if out of warranty well....spose at the freedom to do whatever ya want i guess lol...but i would add it either way

 

i just used royal purple in mine i have no problems at all .

 

I know I have a LSD. Got the additive the other day.
So, synthetic in the front axle will be ok?
How about the trans and transfer case, every 60,000?