[Fot] Radiator Caps

[Randall]

> It's even easier if you've got a compressor with a pressure regulator.
> Just adjust the pressure up until the cap opens.

True, if you can reliably detect when it opens.  In my case it was leaking
even below 'opening' pressure.  I wasn't sure if the problem was the cap or
elsewhere, hence the static test (which showed that both an old cap and a
new one failed to hold even the rated 4 psi).

-- Randall