PeachParts Mercedes-Benz Forum - Slightly louder PS pump on E420 W210 than I'd like

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apb	03-07-2011 12:38 PM

Slightly louder PS pump on E420 W210 than I'd like

I do not have a leak and the fluid is topped off. Any suggestion on what to do? Do I need a new power steering pump or should I use another fluid such as Pentosin CHF 11S? What would cause an older PS unit to get noisy?

Thanks!

mbdoc

03-07-2011 01:34 PM

You could try the MB additive Lubrizol 6178, part number 001-989-61-03.

apb	03-08-2011 05:56 PM

Significantly improved now as a result of Lubrizol... Thanks!

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