Correct Power Steering Fluid

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Jimmawan

New Member
Joined
Jan 3, 2024
Messages
2
Location
Fife, Scotland
Car
2009 Mercedes C Class C 2.1 CDI A Saloon
I am driving a 2009 C Class 2.1 CDI Automatic . I recently adjusted the steering tilt and position several times. This in itself presented no problem, however, following this adjustment I get what sounds like a rubbing noise which appears to be coming from just under the steering column cover when turning the steering wheel. Sounds like rubber against plastic. Of course it could be coming from further down the column. So I decided to check the steering fluid. It is minimum on the dipstick for cold, this when engine was warm so decided to top up. Halfords recommended according to their data "Comma MVCHF Central Hydraulic Fluid ( for CHF11S and CHF202 applications)" .... no idea what this means but these details are on the bottle.
Questions:
1 - Is this the correct fluid?
2 - Can you just add to existing or is it best to empty the reservoir and then refill? (I notice several posts on youtube show using a turkey baster to suck out the existing fluid)
 
Turkey baster method will take a while and use about 3+ litres of expensive fluid instead of just one because you are only able to get the fluid out of the tank , not the rack , you have to keep cycling the fluid (driving the car) until it runs clear , . Not sure which expansion reservoir you have but it could possibly be the throw away type . The filter is moulded into it and it is a service item just like spark plugs or an oil filter , disposable.

Bit like this .

 
I am driving a 2009 C Class 2.1 CDI Automatic . I recently adjusted the steering tilt and position several times. This in itself presented no problem, however, following this adjustment I get what sounds like a rubbing noise which appears to be coming from just under the steering column cover when turning the steering wheel. Sounds like rubber against plastic. Of course it could be coming from further down the column. So I decided to check the steering fluid. It is minimum on the dipstick for cold, this when engine was warm so decided to top up. Halfords recommended according to their data "Comma MVCHF Central Hydraulic Fluid ( for CHF11S and CHF202 applications)" .... no idea what this means but these details are on the bottle.
Questions:
1 - Is this the correct fluid?
2 - Can you just add to existing or is it best to empty the reservoir and then refill? (I notice several posts on youtube show using a turkey baster to suck out the existing fluid)
Thanks
 

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