mercedes sl

[bigall]

Hi can anyone advise type of oil to use in the roof pump and is it worth changing it and the best way to go about it
thanks

[mbtech01]

which model of sl are you referring to ?
If its the w230 model series the the Mercedes part number for the roof oil you need is 000 989 91 03 & you will need a filler syringe tool (230 589 01 63 00) to put the oil into the roof pump.
Why do you want to change the oil ? There should be no need to replace the oil unless the sytem has developed a leak or you have changed one of the hydraulic rams for some reason.
Personally if the roofs working ok then its like the old saying goes - if it ain't broke, don't touch it !

[bigall]

HI model is r129 i just thought it may benifit from some new oil its a 96 model prob never been changed but like you say if its not broke dont f about with it thank for reply regards,

[Pontoneer]

It is beneficial to change the oil periodically , and the R129 uses the same ZHM mineral oil as the self levelling system in the estate cars and some other models .

[PositronicRay]

Pontoneer said:

It is beneficial to change the oil periodically , and the R129 uses the same ZHM mineral oil as the self levelling system in the estate cars and some other models .

I've heard people mention this but not sure why? The oil won't get contaminated and is hardly worked hard enough to degrade.