This page lists every known solution for the clue “Oil Source” in Crossword Challenge. Because this clue can appear in different puzzles (levels) with different required answers, we first list all the answers, then show which one appears in each puzzle below.
Oil Source Crossword Challenge Answers (All Variants)
Olive
If more than one answer is listed, open your puzzle page below to confirm the one used there.
All Known Answers for Oil Source Clue
Puzzle 48 — - Puzzle 173 —
Where This Clue Appears
Last Checked: December 28, 2025