BryanMcPhail.com

Professional software development, amateur BMW tinkering, old arcade game stuff

By

E31 power steering fluid CHF11S

A previous post talked about the replacement of the brake booster pressure accumulator.  The possible reason for the failure of that component became apparent when I examined the power steering fluid (the same pump/fluid drives the brake booster as well as steering and if present self levelling rear suspenion).

It’s red!  Most likely a previous owner/mechanic dumped regular ATF in there rather than CHF hydraulic fluid.  There’s a good chance this damaged the pressure accumulator diaphram over time.

red

CHF11S should always be a strong green colour, as should the older CHF7.1 used in the E32.

green

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>