"m Ransley" wrote in message
...
You will know if its bad when you try to use it, but I dought if it will
match, oil paint darkens and looses sheen, so it will be noticable.


You'll probably need to strain it for chunks of dried paint and debris that
sometimes accumulates on the lip and inside edges of old cans especially if
you are rolling it on.

I used some old primer (tinted with new paint) and I was picking paint
boogers off the wall the whole time because I didn't strain.

A painter told me that premium paint has a shorter shelf life than standard
paint. It does spread easier and last longer on the wall but just not in
the can. I am not sure why though.