Anyone have the time for C-41 film in Caffinol-C

[LarryD]

I found some old C-41 in a box from about 2001 or 03 thought I would try it in coffee. I have found on the internet that 20 minutes is the normal time for 6 spoon fulls of rounded coffee with 2 of level washing soda and  100mg of Vitamin C. sound about right? I am using cheap Mexican instant coffee.