Checking PENTOSIN CHF 11 S Hydraulic Fluid In The Power-Steering System

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The reservoir is located in the engine compartment. There are two marks on the dipstick located on the reservoir cap. One side bears the mark "Cold" for a cold engine (approximately 20°C) and the other "Hot" for a hot engine (approximately 80°C).

Fig 1: Identifying Power Steering Fluid Dipstick Mark

Courtesy of PORSCHE OF NORTH AMERICA, INC.

Check the fluid level (Pentosin CHF 11 S) with the engine stationary and cold (approximately 20°C).

Open engine compartment lid. Open reservoir cap.
Wipe dipstick. Close reservoir cap and open it again. The fluid level should lie in the hatched area beneath the "Cold" mark (mark = maximum level at 20°C). Top up with Pentosin if necessary. The upper "Hot" mark is intended for a fluid temperature of 80°C.

In no case add too much Pentosin. The respective marks are for the maximum fluid level at the "COLD" or "HOT" temperature.

NOTE:

If assembly work was performed previously, check the fluid level with the engine idling and without operating the steering.