On Sat, 30 Dec 2017 23:19:39 +0000, T i m wrote:

snip

No amount of sealing gunge is going to seal a
decent gash in the tyre if you're unlucky enough to sustain one.

Agreed (and in fact it *should* try to seal such damage).

Doh, *shouldn't* ... ;-(

Cheers, T i m