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2006 CLS500, 2002 CLK430
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3 Posts
Discussion Starter #1
Hi,

About to service the differential on my son's W208 CLK 430 (and also on my w219 CS 500.
Both were serviced about 6 years ago.

Question: Drain, then Flush (with a kerosene type motor flush first), then refill or just drain/fill a few times.

I suspect both diffs really need it, but no noises or bad symptoms.
Also, the driver's side diff seal weeps. Not a lot, but over time it built up on the diff case.
I cleaned it a week ago, and will see how bad it is.
I suspect replacing the left diff seal is a pain.

2002 CLK 430: Mileage = 160K
2006 CLS 500: Mileage = 110K

Ideas?

Thanks,

- John
 

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1999 E320, 2003 E320 Wagon, 2005 C230K SS, 2010 Accord LX w Eibach & Koni FSD's
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2,500 Posts
Just drain. Pump a little fresh fluid in and let drain again to help remove any remaining old oil. Always remove filler plug first!

No need to drain and refill more than once. I wouldn't put anything in there except differential fluid.
 
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