Help-W126(380SE) engine block drain plugs
 

Started changing the coolant and fitting new hoses. My CD isn't very clear as to weather the drain plugs are hex bolt or recessed hex(allen) plugs. Looking under the car I see , on each side, forward of the engine mounts, a allen hex plug. If this is it I will need a allen socket so I can get some leverage. Anyone, off hand , know what size allen head this would be? Thanks

figured it out....6mm hex bolts