blueman wrote:

"rider89" writes:
It would be a major mistake to not replace this cast iron, if the
problems with it are so apparent.
A no-brainer.

The problem is that the bad section extends through an 18 inch 100
year old stone foundation about 8 feet underground with only the last
24 inches or so inside the house. Presumably replacing the pipe would
require tunneling through the foundation and deep beneath the yard.
My plumber is concerned that even cutting into the next section of
pipe could disturb this older, corroded section.

so... even tho you know its bad, and in dire need of replacement, you have
no intention of fixing it? How's you car? do you maintain it the same way?
Sheesh!
Eric