VenomX

Do any of you guys do PSF changes ?
My 2002 W203 C240 has the level right on the minimum for 20c and would like to empty out the fluid and replace it with fresh.

I am not too concerned about flushing etc, just removing all the old fluid and putting more in. CHF11S is correct right?

Do you guys recommend doing it with the engine off whilst removing the fluid whilst turning left to right. Then when topping back up again to turn engine on steer left and right then keep topping up until needed ?

My concern is that there is a 20c and an 80c mark. If the engine has been on for a few minutes should you set it to the 20c or 80c mark ?
I think what I will do is measure how much comes out then put back in the same amount plus a slight bit more

Thanks

Thanks

KevinH2000

This is on my list of preventive maintenance items. I'm planning to follow the process shown in this video when I get around to it.

According to the FCP Euro website: CHF 11S is the proper fluid.

Good luck with your work and please post an update about your experience.

slammer111

The procedure isn't terribly complex. Just do it with the engine off, and use the 20C marks.

The circuits will flush themselves whenever you turn the steering wheel during normal driving. Replace the reservoir fluid once a week for a month. Good enough.

KevinH2000

I think that process makes sense. It will avoid the requirement to recruit someone to turn the wheels back and forth while you yell at them.

112233

There has been a TSB that the level should be at the MAX mark.