Susan has been having her annual bout of cooling system problems.
It is probably aggravated by a couple factors including some brief
pretty cold weather (for Oklahoma) although we found a pretty ratty
previous radiator repair, a split hose and a leak between the water pump
and the head on the pump we put in a couple years ago from a rubber ring
gone very soft. Currently we're awaiting a new set of gaskets and seals.

Since most of my Volvo experience is on pre-75 Volvos I have mixed emotions
about some of the features of this cooling system. The hose from the bottom
of the reservoir to the middle of the radiator looks like a great deal.
Is there a pressure cap on this system? Earlier models had them either on
the radiator --66 or on the reservoir 67-- but I have not found any device
that regulates radiator pressure on this car. Where/what is it?
--
George Downs, The "original" Walrus3, Bartlesville, Oklahoma