Capital journey - oil got wasted (7)
I believe the answer is:
tripoli
'capital' is the definition.
(capital of Libya)
'journey oil got wasted' is the wordplay.
I cannot really understand how this works, but
'journey' could be 'trip' (trip is a kind of journey) and 'trip' is found within the answer.
an anagram of 'oil' is 'oli' which is within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tripoli that I've seen before include "powdery deposit" , "Libya's capital" , "City in Libya - city in Lebanon" , "Libyan capital" , "Polish" .)