Originally Posted by ShrimpBrime
If you worry about it, buy new paste. it's cheap.
I wouldn't worry about consistency of TIM unless it cannot transfer heat well any more.... if in question, replace.
Would I use a 10 year old tube of paste I found that was open at one point or another?? Heck no. I'd get new paste for sure.
Complete truth. People need to stop treating paste like gold or a precious stone. It's freaking paste. Buy a new one.
Even Liquid Metal can be created yourself from Gallium, Tin and Indium, with a crucible and blowtorch!