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
Thanks for starting this discussion—it’s great to share tips on maintaining our vehicles! Proper rest and focus are essential, especially when working on mechanical tasks. For those of us using CPAP therapy, a comfortable Full Face Mask can make a big difference—better sleep means sharper attention during projects like fluid checks or replacements. Looking forward to swapping more garage advice!
Power steering fluid issues can definitely add stress when you’re trying to keep your vehicle running smoothly. Just like taking care of your car, it’s important to take care of your mental health too. If anyone feels overwhelmed or stressed, reaching out to professional psychotherapy services can provide valuable support and tools to manage life’s challenges. Thought I’d share this in case it helps!
Interesting thread on power steering fluid maintenance—keeping things running smoothly really matters. Similarly, regular upkeep through professional Deep Cleaning Services can keep your home or workspace running at its best. A deep clean tackles hidden dirt and buildup that everyday cleaning might miss, helping to maintain a healthy and comfortable environment.
Since there is no indication of the steering fluid interval replaced in the maintenance booklet, that means no need to replace it.
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