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Old 01-06-2019, 09:45 PM
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LSD

I figured my car didn't have the oem lsd since it didn't show up in a vin check. But when I check the VMI it has a "diff svc synthetic" listed at 5337 miles. I assume this is the required lsd drain and fill even though thats supposed to happen at 2000 or 2500 miles. That made me think I had the oem lsd. I jacked the rear up, put in neutral, rotated a rear wheel and the opposite side didnt move. Safe to say there is no lsd?





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Old 01-07-2019, 12:08 AM
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If you couldnt feel that your car has an LSD by driving it, theres a problem..
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Old 01-07-2019, 11:14 AM
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Yup no lsd
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Old 01-07-2019, 05:44 PM
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The other wheel should turn no matter what differential is in there.
Maybe you had the car in neutral and the drive shaft turned instead of the other wheel.
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Old 01-07-2019, 06:59 PM
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Originally Posted by gtracer View Post
If you couldnt feel that your car has an LSD by driving it, theres a problem..
I dont get deep into the throttle unless I'm on the highway so I dont see a problem here. I'm not spinning tires from light to light on side streets

Originally Posted by AMGonFire View Post
Yup no lsd

Originally Posted by sventastic82 View Post
The other wheel should turn no matter what differential is in there.
Maybe you had the car in neutral and the drive shaft turned instead of the other wheel.
The car was in neutral. I was using the instructions from this post
https://mbworld.org/forums/c63-amg-w204/619820-oem-amg-lsd-picture.html#post6750090


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Old 01-07-2019, 11:08 PM
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Originally Posted by bentz69 View Post
I dont get deep into the throttle unless I'm on the highway so I dont see a problem here. I'm not spinning tires from light to light on side streets





The car was in neutral. I was using the instructions from this post
https://mbworld.org/forums/c63-amg-w204/619820-oem-amg-lsd-picture.html#post6750090



It doesnt work if the drive shaft is turning and the other wheel isnít. That doesnít tell you anything.
Leave it in P and turn one wheel the other will turn as well. Same driving direction = LSD

BTW I installed a LSD in my black C63 (RIP)
I wasnít able to tell the difference under normal driving.
Donít feel bad if you canít tell the difference. everybody else who are able to, most likely took them to a track, burned some rubber or think they can tell the difference.

Last edited by sventastic82; 01-07-2019 at 11:18 PM.
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Old 01-07-2019, 11:10 PM
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I believe all cars that have the suede/alcantara and leather combo steering wheel (as opposed to a full leather steering wheel) from the factory, came also with an LSD in the same package. Mine has that type of steering wheel and has an LSD (P30 package). Hope this helps.
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Old 01-07-2019, 11:36 PM
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Originally Posted by tphss View Post
I believe all cars that have the suede/alcantara and leather combo steering wheel (as opposed to a full leather steering wheel) from the factory, came also with an LSD in the same package. Mine has that type of steering wheel and has an LSD (P30 package). Hope this helps.
P30 was for the pre face lift only. P31 replaced P30 in the face lift model.
The LSD was included in the P30 but for the P31 it became an option.
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Old 01-08-2019, 12:17 AM
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Oh thanks, I remembered some differences but didnít remember this.
So the vin decoder or markings on the diff casing doesnít specify an LSD? You have to lift the car up and turn a rear wheel on a P31 car?

Btw could you get a facelifted C63 built with a factory LSD but without the P31 back then?
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Old 01-08-2019, 01:55 PM
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Originally Posted by tphss View Post
Oh thanks, I remembered some differences but didnít remember this.
So the vin decoder or markings on the diff casing doesnít specify an LSD? You have to lift the car up and turn a rear wheel on a P31 car?

Btw could you get a facelifted C63 built with a factory LSD but without the P31 back then?
i have a 2012 non pp with a factory lsd so answer is yes.
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Old 01-08-2019, 08:54 PM
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Originally Posted by sventastic82 View Post
It doesnt work if the drive shaft is turning and the other wheel isnít. That doesnít tell you anything.
Leave it in P and turn one wheel the other will turn as well. Same driving direction = LSD
I'll give it a try. Any idea why the other guy mentioned to leave it in neutral?

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Old 01-08-2019, 09:33 PM
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Originally Posted by bentz69 View Post
I'll give it a try. Any idea why the other guy mentioned to leave it in neutral?
i did the same thing as you. I wanted to make sure after I had work done to fix an issue with my diff it was working properly. Jacked up the car, put in neutral, spun the wheel on one side the other wheel went in the same direction. LSD was functioning.
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Old 01-08-2019, 10:14 PM
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Originally Posted by tphss View Post
Oh thanks, I remembered some differences but didnít remember this.
So the vin decoder or markings on the diff casing doesnít specify an LSD? You have to lift the car up and turn a rear wheel on a P31 car?

Btw could you get a facelifted C63 built with a factory LSD but without the P31 back then?
The VIN will report option 471 for LSD if you don't have option 471 from the VIN decode you don't have an LSD (unless it was aftermarket added), even if it was packaged with other stuff, the VIN will show 471 (the proper datacard from EPC or from the thread on here not those crappy VIN decode websites that don't always show everything).
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Old 01-08-2019, 10:52 PM
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Originally Posted by bentz69 View Post
I'll give it a try. Any idea why the other guy mentioned to leave it in neutral?
It should work if you have the car in neutral. But if for some reason the other wheel had some resistance which kept it from turning. (Some corrosion on the disk of parking brake catching a little) the drive shaft will spin.
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Old 01-08-2019, 11:05 PM
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Originally Posted by AMGonFire View Post
i did the same thing as you. I wanted to make sure after I had work done to fix an issue with my diff it was working properly. Jacked up the car, put in neutral, spun the wheel on one side the other wheel went in the same direction. LSD was functioning.
Well my problem is one wheel spun and the other didnt move while the car is in neutral.

Originally Posted by roadkillrob View Post
The VIN will report option 471 for LSD if you don't have option 471 from the VIN decode you don't have an LSD (unless it was aftermarket added), even if it was packaged with other stuff, the VIN will show 471 (the proper datacard from EPC or from the thread on here not those crappy VIN decode websites that don't always show everything).
My vin doesnt show option 471 but a service history report shows a differential service at 5000 miles when the car went back to the dealer for its first ever service. What possible reason would a differential synthetic service be performed on a car that doesn't have an lsd. Maybe a leaking diff that needed to be opened but theres no indication of that on the service history

Originally Posted by sventastic82 View Post
It should work if you have the car in neutral. But if for some reason the other wheel had some resistance which kept it from turning. (Some corrosion on the disk of parking brake catching a little) the drive shaft will spin.
I tried to spin each wheel on it's own and the opposite side didnt move. Is trying this method in park as opposed to neutral the same thing?

I guess short of opening the diff I'll never know. Dont want to open the diff with intentions of using lsd synthetic only to find a non lsd and having to pour back in the fluid that drained. Or I can just buy both types of fluid and see what happens lol

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Old 01-08-2019, 11:29 PM
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Originally Posted by bentz69 View Post
My vin doesnt show option 471 but a service history report shows a differential service at 5000 miles when the car went back to the dealer for its first ever service. What possible reason would a differential synthetic service be performed on a car that doesn't have an lsd. Maybe a leaking diff that needed to be opened but theres no indication of that on the service history
There is no 5k service, first is 10k and first trans is 40k. All those things where changes at 5k, so owner requested all fluids changed, possibly car was 1 year old so was due for engine oil, but diff and trans changed means an owner that cared and paid to have them changed likely after broken in, but doesnít mean you have an lsd.
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Old 01-09-2019, 12:24 AM
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You don't have an LSD. In neutral, an LSD will spin both wheels the same direction. In park, you won't be able to spin them (the clutches will want to spin the wheels together, which is why they won't spin, like trying to drive the car in park). In neutral, an open diff will spin one wheel and the driveshaft or spin both wheels in opposite directions. In park, an open diff will spin the wheels different directions.
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