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Power Steering fluid

2010 and 2012 C350 are they using the same Power Steering Fluid.

When I need to change them and some say is life time just top it up if need ( I really don't believe is life time) and under the manual it say Chevron Texaco PSF 9109 and it look like it hard to find. So site say Mercedes 2008 - 2010 they change from CHF 11S to Chevron Texaco PSF 9109. But dealer still selling CHF 11S. Is Pentosin CHF 11Sok to use

Thanks !

Spencer Chan

1 comment

1 Comment

Senior Leigh | 老李

Jul 14, 2022

Since there is no indication of the steering fluid interval replaced in the maintenance booklet, that means no need to replace it.

MY10-Maintenance-Booklet

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But if you'd like to replace it, try to find the fluid with MB Approval. Here is the link: https://operatingfluids.mercedes-benz.com/sheet/345.0/en