Type of fuel, possibly laundered, runs out (8)
I believe the answer is:
unleaded
'type of fuel' is the definition.
'unleaded' can be an answer for 'fuel' (I have seen 'Such fuel' mean 'unleaded' so perhaps 'fuel' could also mean 'unleaded'). I'm not sure about the 'type of' bit.
'possibly laundered runs out' is the wordplay.
'possibly' is an anagram indicator.
'runs' becomes 'r' (cricket abbreviation).
'out' suggests deleting specific letters.
'laundered' with 'r' removed is 'laundeed'.
'laundeed' with letters rearranged gives 'UNLEADED'.
Can you help me to learn more?
(Other definitions for unleaded that I've seen before include "Like environmentally friendly petrol" , "Kind of petrol" , "Dual need (anag.)" , "cleaner fuel" , "Such useless pencils" .)