Best hydraulic oil for 2011 roof

Shaun T

Shaun T

Member
Hi, what would you recommended for topping up the hydraulic fluid in the roof motor for a 2011 Z4? Doesn't look like i have any leaking and the level is just about in the middle so all good but I want to keep some in the boot just in case.
I have been looking at pentosin chf 11s hydraulic fluid or fuchs titan chf 11s.
 
For your 2011 E89 Z4, Pentosin CHF 11S is the correct and only acceptable fluid for the roof hydraulic system (Vol 2, Ch 8 — Sourcing Parts for Your E89). This is not a "compatible alternative" situation — CHF 11S is the specific synthetic hydraulic fluid the system requires, and using any other fluid type will damage the internal seals of the hydraulic rams and pump.

Both Pentosin CHF 11S and Fuchs Titan CHF 11S are the same specification fluid — Fuchs supplies some of the CHF 11S branded as Pentosin, so either brand is fine as long as it's specifically labelled CHF 11S.

Where to source: Pentosin CHF 11S is stocked by Autodoc, Euro Car Parts and many motor factors (Vol 2, Ch 8). The BMW dealer equivalent is BMW Part No. 83 29 0 429 002. The fluid comes in 1-litre containers — a typical E89 roof system change requires approximately 0.5–0.8 litres, so having a full 1-litre bottle for emergencies is sensible.
 
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