I often find that "jargon" has a place in the right context: a general English word like 'use' has too many connotations, and the longer word is more precisely suited to one area.

But I have never found a use for 'utilize': never been writing a sentence when 'use' doesn't have the same meaning, just as clearly, and without ambiguity.

'Utilize' normally (i.e. in the contexts where you actually come across it) means the same as 'use', not 'use efficiently'. I haven't even been able to invent any situations where it expresses anything better.

It and 'commence' go in a bin I have for useless words.