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Home >> Porsche >> 2007 >> Boxster Base, Standard >> Repair and Diagnosis >> Steering >> Steering Column >> 48 02 01 Checking the fluid level for the power-assisted steering - as of MY 2005 (All Models) >> Checking the fluid level for the power-assisted steering >> Notes on power-steering fluid

Notes on power-steering fluid

Damage to the power-assisted steering is caused by a shortage of oil in the hydraulic system. Even small leaks can cause the fluid to escape and damage the servo pump as a result of the high oil pressure occurring in the hydraulic circuit.

Grunt-like noises that can be heard when the steering is locked, or foam formation in the reservoir indicate a shortage of oil and/or that air has also been sucked in. Before filling the reservoir, any existing leaks must be eliminated on the suction side. Alternatively, the defective part on the pressure side should be replaced.

Only Pentosin CHF 11 S may be used in the reservoir. Pentosin CHF 11 S can be ordered under the following part number:

Quantity supplied 1 liter = 000.043.203.33.

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