How long do juices last?
Freshly made juices should be consumed as soon as possible. Preferably within 24 hours as they do not contain preservatives. If you cannot drink it all up store it in the refrigerator. However, juices made with masticating juicers/slow juicers can last up to 72 hours in the refrigerator. After that they may not be safe to consume. Also, most of the nutrients and fresh taste of the juice also will be lost the longer you store. So, try to consume within a few hours of juicing with your Breville JE98XL juicer.
Do I have to add water when juicing?
No. There is no need to add water. Breville JE98XL juicers don't need water to juice fruits or vegetables. They extract the juice from whatever produce or greens you add to the feed tube. If you add water it only dilutes the taste of the juice. To get the fresh and actual taste of the fresh produce try to consume it undiluted.
However, some strong-tasting fruits and vegetables can be diluted with water or other juices to make them more palatable. But all this is more to cater to your tastes. The Breville JE98XL juicer does not need water to juice.