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muzzy1

Where to top up Power Steering fluid?

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Just a quick one, where do I top up the power steering fluid on a 2005 Porsche Boxster? It makes a moaning noise when I turn the wheel slightly to the left or right. Thanks!

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Just a quick one, where do I top up the power steering fluid on a 2005 Porsche Boxster? It makes a moaning noise when I turn the wheel slightly to the left or right. Thanks!

The power steering pump and reservoir is located at the very front of the engine compartment, on the driver's (left) side, just to the left of center.

Here is a photo of the reservoir and the cap, at the red arrow (Note that this photo is from an early 986, but the location is the same):

(click on the photo to enlarge)

post-6627-0-77786100-1331744019_thumb.jp

Regards, Maurice.

Edited by 1schoir

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Thank you! So I've got to get access to the engine....

That's easy enough. Take a look at your owner's manual. The 987 require a torx or other type of screwdriver to remove the engine cover. The 986's had "turnbuckle-type" fasteners that could be removed by hand. I guess Porsche wants us to pay more visits to their dealers for these complicated procedures! LOL!

Regards, Maurice.

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Ok I'll have a look in there. Thanks alot for the replies mate! Does it matter what power steering fluid I use? Cheers.

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Ok I'll have a look in there. Thanks alot for the replies mate! Does it matter what power steering fluid I use? Cheers.

The factory fluid is definitely a good idea. Pentosin, IIRC.

Regards, Maurice.

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Watch which Pentosin, factory specs the CHF 11S (full synthetic) for these cars, and Pentosin tech literature states “If vehicle specifications state CHF 11.S there is no substitute, however, if vehicle specifications state CHF 7.1, CHF 11.S can be substituted.” Pentosin CHF 7.1 is mineral oil based. Pentosin CHF 202 should only be used in 2005 and later Cayennes.

A handy Pentosin PDF application guide: http://pentosin.net/...GUIDE3_Rev1.pdf

Most NAPA stores now carry Pentosin products................

Edited by JFP in PA

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JFP, used CHF 202 in my '99 Box. I read it was compatible where CHF 11S was recommened. Not true? You'd recommend going back to 11S?

http://pentosin.net/pressreleases/CRP_101_Fluid_Guide.pdf

Important Notice:

If vehicle specifications state CHF 7.1, CHF 11S and

CHF 202 can be substituted in place of, but not mixed with, CHF 7.1.

CHF 11S and CHF 202 are fully compatible and mixable. Pentosin CHF

fluids should not be mixed with ATF fluids.

Edited by bar10dah

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From the 2005 Porsche TSB...

"Changing over Pentosin CHF 11 S to Pentosin CHF 202.

The hydraulic fluid Pentosin CHF 11 S, which was previously used for power steering in the vehicles, will

be changed over to Pentosin CHF 202.

Once existing inventory has been used up, Pentosin CHF 11 S will no longer be available from the parts

department.

Pentosin CHF 202 is approved for use in all instances in which Pentosin CHF 11 S was previously used

and can be used instead of Pentosin CHF 11 S regardless of the information printed on power-steering

pumps and oil tanks.

Both types of hydraulic fluid can be mixed."

  • Upvote 1

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From the 2005 Porsche TSB...

"Changing over Pentosin CHF 11 S to Pentosin CHF 202.

The hydraulic fluid Pentosin CHF 11 S, which was previously used for power steering in the vehicles, will

be changed over to Pentosin CHF 202.

Once existing inventory has been used up, Pentosin CHF 11 S will no longer be available from the parts

department.

Pentosin CHF 202 is approved for use in all instances in which Pentosin CHF 11 S was previously used

and can be used instead of Pentosin CHF 11 S regardless of the information printed on power-steering

pumps and oil tanks.

Both types of hydraulic fluid can be mixed."

Loren, while the dealer network is no longer stocking the 11s (due to the car’s changing over to the 202 post 2005, and the fact that the products can be mixed without issue), the 11s product is still readily available in the aftermarket (most NAPA stores stock it, and even discount it). We are able to obtain it in quantity whenever we need it.

Mixing the 11s with the 202, or substituting the 202 for the 11s is not an issue, but there is a slight difference between the two products, mostly in viscosity, so we try and stay with the 11s for the pre 05 cars whenever possible.

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Muzzy1, did topping off the power steering fluid resolve the the steering noise problem?   If not, how did you solve the problem?   

 

I have the same problem with my '08 Cayman S.   Base on a quick inspection, the mechanic said that it doesn't seem to be a fluid problem since there is no leak found under the car.

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