Attention-seeker was in front, running well after taking fluid (5)
I believe the answer is:
oiled
'running well after taking fluid' is the definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?
'attention-seeker was in front' is the wordplay.
'attention-seeker' becomes 'oi' ('oi' is a way of getting somebody's attention).
'was in front' becomes 'led' (I've seen this in another clue).
'oi'+'led'='OILED'
Can you help me to learn more?
(Other definitions for oiled that I've seen before include "Lubricated (with drink?)" , "Greased; drunk" , "Besotted" , "running smoothly?" , "protected from rust?" .)