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Hi Guys, can anyone advise / comment on whether (and where) a '97 Boxster base might have a power steering fluid filter? BMW has a filter (albeit simple mesh) in the reservoir... does Porsche do the same? Also, anyone installed an in-line PS filter (good quality on return line)? I looked hard through the topics / articles but may have missed it discussed previously 😕

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There is no ps fluid filter in a 986. I have not heard anyone installing a filter either.

I’ve done a PS fluid flush by disconnecting the return line underneath the driver side of the car  and there is a wire cage.



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By far, the larger issue with the power steering systems on these cars is heat, not debris.  More power steering pumps fail from overheating than anything else.  There are a couple of aftermarket companies producing add on coolers because of this issue.

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Thanks Gents for the replies. I've just done what you've done, Duster. Only got 500ml fluid out then filled up. Will drive for a bit and repeat with remaining new 500ml still in container.


JFP, good point. After reading your comment I looked under my 986 and keeping an eye on the PS hose closer to the exhaust headers... not bad but looks like heat is affecting it. I do know you're referring to the heat generated by the PS system though.


Both replies good to know.

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