I got my first butane zippo today (I have 9 classic ones). Does fuel life change much? Does the butane one also leak despite not being used?

https://preview.redd.it/5742i717xsfe1.jpg?width=640&format=pjpg&auto=webp&s=32eadca10abb727f8805641cf3f6ebc7616b8eb3