I started using Valvoline SynPower PS fluid about a month ago, after leaking like crazy. I am on the second of three bottles and the leak has slowed noticeably, but not yet entirely. I expect it will stop soon.

On the other hand, with the weather cooler now, metal parts around the seals are contracting and could also be contributing to slowing the leak.

Someone stated in another thread that introducing some brake fluid into the PS system can produce some amazing results in stopping leaks. Anyone ever try this?

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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black