Heavy Petroleum Liquid Fuel
This page is the CodyCross answer for the clue below from Rainforest, Group 1213, Puzzle 2 (Chameleons).
Question is: Heavy Petroleum Liquid Fuel
and the answer is: DIESEL
Word Meaning:
DIESEL — A fuel derived from petroleum (or other oils) but heavier than gasoline/petrol. Used to power diesel engines which burn this fuel using the heat produced when air is compressed.
Definitions from Wiktionary.