Below you can find the Due to deposits older engines may need gas with a higher octane number to prevent this Jeopardy Words Answer. The answer to Due to deposits older engines may need gas with a higher octane number to prevent this has 8 letters. This clue belongs to the Gas category and is part of Jeopardy Word Level 1312. If you scroll near the bottom you will find other clues and answers part of level 1312