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Differential for a 450slc 5.0

Wed, 07 Jul 2021 23:06:44 GMT

I have a rebuilt diff for a 450slc 5.0. How, if at all, does it differ from the standard 450slc? The owner bought it thinking it was the problem, but it was not and the car's long gone. Thanks

190E fan
Thu, 08 Jul 2021 16:31:17 GMT

This might be a question for the MB Classic Center to answer.

Sat, 10 Jul 2021 14:30:40 GMT

The car is old with 124K miles.It is leaking from the pinion seal, diff output seal,r&r axle boot, left side axle seal, both boots dry and some cracks.Never ran dry.The tech I spoke to has 47 years experience in MB.However,he did not inspect the car. He told me to just refill the differential periodically.I doubt that it ever ran dry, but can not be sure.I bought it used. Any opinion on whether I should try and have it repaired. Not to many old timer skilled MB mechanics left. This guy will not take the work and the tech I found is unsure or not confident in doing the job.The unsure tech is another old timer at foreign cars 35 Years +,so he knows his way around cars.All opinions will be appreciated.This is my second MB. The first one was a 1979 450 SLC. Thanks to al for the help. Rob

Sun, 11 Jul 2021 18:24:28 GMT

its got to leak a lot for a long time to go dry. If you can tolerate the occasional drips i'd suggest you drain the diff, refil with synthetic gear oil, put a bakers pan under it where you park and be done with it. or pay the $800 plus I paid at a dealer to have it resealed.

Sun, 11 Jul 2021 20:13:46 GMT

I think the leak is not to bad.I wanted to just refill it from time to time.The problem is worse because I have an axle boot leaking too.I think my repair cost here would be much higher. I have to get a new brake caliper installed, so I will try and take a good look at the issue this week. I keep going back and forth with it.The car will be 50 next year. I have a repair wish list like a five year olds toy list at Christmas. Thanks for the help. Rob

Sun, 11 Jul 2021 21:06:09 GMT

Axle boots contain grease. The diff contains oil. When your list is complete you missed something. The 5.0 in the SLC is a rare bird. If you love it, fix it. Good luck.

Mon, 12 Jul 2021 00:12:43 GMT

Thanks,but the threads seemed to be crossed here.I have a 450SL,not a 450SLC.I had a 450SLC many years ago and not a 5.0.The 450SLC was in much better shape mechanically. I like my SL and if the boot grease gets to low I could lose the axle.So, I am leaning on getting the rear end repaired. Thanks so much for your help. It is greatly appreciated. Rob

Fri, 13 Aug 2021 07:29:44 GMT

The only way grease can be lost from CV joints, is through punctured cans on early CV joints, and loose flange mounting bolts on later non-can type CV joints, and rubber boots on both early and later CV joints. Rear axle oil can leak through the pinion seal, both axle seals, and rear cover. BE SURE the breather is not plugged with debris, causing internal pressure to build up and blow oil out through the aforementioned seals. This doesn't happen often on pavement-driven cars, but can happen on older cars driven on dirt/mud roads.