CarCareTruth Score
Decent, but it's tough on the environment.
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Prices may varyThe manufacturer's Safety Data Sheet classifies this product with one or more GHS Category 1 health hazards — the most severe tier. The hazard statements in quotes below are the verbatim GHS language from the SDS, as required by OSHA's Hazard Communication Standard. The line under each statement translates the GHS classification into plain language.
GHS Category 1 aspiration toxicity — thin, oily liquids can slip into the lungs if swallowed, causing chemical pneumonia.
If swallowed, inhaled, or splashed in eyes:
Call Poison Control immediately at 1-800-222-1222 (US, 24/7, free) and have the product container with you. Poison Control's standing guidance is to not induce vomiting after chemical exposure; they will direct first-aid steps based on the specific product.
About this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
This product ranks #4 of 9 in Power Steering Fluid.Three above it ↓
Last reviewed June 12, 2026
TL;DR The OEM hydraulic fluid for most European power steering systems · CHF 11S defines the spec for BMW, Mercedes, Porsche, Audi, Volvo, and others. DANGER signal word from an aspiration hazard; wear nitrile gloves during a flush.
Pentosin CHF 11S is a synthetic mineral-oil/PAO blend hydraulic fluid · the OEM-specified fluid for European hydraulic-assist power steering systems. In many cases it is the factory-installed fluid, rebadged. It covers BMW, Mercedes-Benz, Porsche, Audi, Volkswagen, Volvo, MINI, Saab, Bentley, and select Chrysler/Jeep/Dodge platforms. Community consensus, well-reviewed by a large owner base, confirms strong fitment accuracy; no documented seal or pump failure patterns.
Buy it if your service manual specifies Pentosin CHF 11S · this is the correct fluid, not an alternative. Skip it for Honda/Acura or Toyota hydraulic-assist systems (those require their own OEM fluid), for GM/Ford vehicles that accept Dexron VI ATF, and for any vehicle with electric power steering (EPS), which uses no hydraulic fluid.
The DANGER signal word is driven by an aspiration hazard · do not induce vomiting if this fluid is ingested; seek medical attention. A skin sensitizer classification from the additive package means gloves are warranted for any system flush. No inhalation H-codes at mixture level. Drain-destined fluid; collect used fluid for proper disposal at an automotive retailer or recycling center.
The back label states CHF 11S is compatible with CHF 202. They are not interchangeable for all applications · CHF 202 is a synthetic ester formula with different properties used on some newer platforms. If your vehicle specifies CHF 202, verify compatibility with your OEM documentation before substituting CHF 11S.
No. Honda and Acura hydraulic-assist systems require Honda PSF specifically. Toyota hydraulic-assist systems require Toyota PSF. CHF 11S is formulated for European hydraulic power steering systems and is not a cross-platform substitute for Asian OEM fluids.
No. Electric power steering (EPS) systems use an electric motor and do not have a hydraulic power steering reservoir. Pentosin CHF 11S (or any hydraulic PSF) is not applicable to EPS vehicles.
Marketing copy from Pentosin, via Amazon. Not editorial.
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