I greased wheels in conflict (8)
I believe the answer is:
disagree
'conflict' is the definition.
(I've seen this before)
'i greased wheels in' is the wordplay.
'wheels' indicates an anagram (letters wheel around).
'in' is an insertion indicator.
'greased' is an anagram of 'dsagree'.
'i' going within 'dsagree' is 'DISAGREE'.
(Other definitions for disagree that I've seen before include "Row" , "Beg to differ" , "Contradict" , "Have a conflicting opinion" , "Differ in opinion" .)