I have a problem whenever I want to, in brief, say "how to keep a ball pen from drying out, keep my laptop cleaned from excessive files and virus, keep my car clean and able to function". The problem is that I want to say it briefly in short sentence instead of fully describing; however I don't know which words I can use.
The only word I can think of is "preserve": 1) Preserve my computer = Take good care of my computer, keeping it away from things making the computer slow.
2) Preserve my car = Take good care of my car, keep it clean outside and keep it functional inside.
3) Preserve my pen = Keep my pen able to be used for writing
=> However the word "preserve", within my range of knowledge, is often used for food. Are there any word that you guys can recommend for electrical items, household items, drinks,...?