Date registered: Oct 2010
Vehicle: '86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Location: With my head in the clouds
Mentioned: 8 Post(s)
Quoted: 496 Post(s)
I only drive manuals, but am I wrong to guess that 722.4 is still a vacuum-operated auto? Either way, try asking on the W124 forum as well.