Dig up old wine and case of turpentine (8)
I believe the answer is:
excavate
'dig up' is the definition.
(I know that dig up can be written as excavate)
'old wine and case of turpentine' is the wordplay.
'old' becomes 'ex' (prefix meaning former or onetime).
'wine' becomes 'cava' (type of Spanish wine).
'and' is a charade indicator (letters next to each other).
'case of' means to remove the middle letters (outsides of).
'turpentine' with its middle taken out is 'te'.
'ex'+'cava'+'te'='EXCAVATE'
(Other definitions for excavate that I've seen before include "Dig a hole" , "Quarry" , "Unearth" , "mine" , "Dig out material from the ground" .)