B&Q Ready mixed grout Advice and information on tiling and fixing tiles to a variety of surfaces

[rob121314]

I have a unused tub of B & Q Ready mixed Grout that is Mould resistant
& waterproof on the top of the lid it has a number 17.8.10 0463 is the first part of this number a use by date if so can I still use it has it would appear to be out of date
Thank You Rob121314