Pressure change can make some tanks leakGoing to Kansas next week for my Great Aunt's birthday, she will be 100 years old on the 4th.After that we will be heading up to South Dakota for a week. Mom has always wanted to see Mt Rushmore. I have 600 ml of juice made up to share with my brother for the trip and thinking about making another 200 ml just in case something spills or leaks.