Fill an automobile tank ... or boost the confidence of, in slang

Let's find possible answers to "Fill an automobile tank ... or boost the confidence of, in slang" crossword clue. First of all, we will look for a few extra hints for this entry: Fill an automobile tank ... or boost the confidence of, in slang. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.