lose vs waste

I don't have time to lose or I don't have time to waste. Please, could some native English speaker correct?   

Answer: "I don't have time to waste" is the common expression that means that time is valuable and musn't be misused or squandered.  But "I don't have time to lose" is not necessarily incorrect.  For example, sometimes one says "I'm losing time," which implies that one is running out of time even though they are not wasting it (or even though they are making an effort to conserve time).