What does the cryptic crossword clue "Fuel like crude oil in engine not half backfiring! (8)" mean?

This cryptic clue uses wordplay to arrive at the answer. Visit the page for progressive hints — definition, wordplay type, and a full step-by-step explanation.

Fuel like crude oil in engine not half backfiring! (8)

Guardian Cryptic #29695 | 29 Across | 2025-05-15 flower

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