http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1V604A2EI1Y61C6D5E&year=1986&make=MB&model=560-SEL-001&category=All&part=P%2FS+Hose

The return hose has a section from the steering box to the cooler and from the cooler to the reservoir. You'll have to measure to know if 1 meter is enough.

Sixto
93 300SD