Tom:

Take your rad to a radiator shop and have them check it out. Probably has serious corrosion, unless the leaks are around the top or bottom tank (bad solder), in which case they can do the whole job at once rather than trying to fix a leak here or there. They may even be able to re-core it at a reasonable price.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!