Brake fluid absorbs moisture so it depends how much moisture is in the air in your area and if you keep the cap on tight or not. But I don’t use previously opened brake fluid if it is over a month old. Some people might go longer.Thanks for the reply!
My rear brake is fine its the front that is giving me problems.
I will keep at it a few more times.
Another quick question how long would you say is too long once the brake fluid is open? I poked to holes in the foil seal and last bled them on thursday I wont get a chance to do it again until monday. Would that be too long?