I had an unexposed roll of very old (by the type of can) TX, and decided to try it, jut for fun.

First test series (all the same image): from EI 20 to 400, in Diafine. Lots of fog, images barelly acceptable at 20 (Diafine has some fog tendency).

Second series: from 5 to 40, in HC-110B (since HC-110 is a low fog dev), 50% more than the recommended time. Darker base (maybe less time would have been better), but image at about 20 would even be printable.

Jorge O