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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Oil problems:

SPILL: Serious oil problem
SLICKS: Oil problems
SPILL: Oil problem
ACNE: Oil deposit problem
STYE: Oil gland problem
ACNE: Oil-related problem
ACNE: Problem associated with peak oil?