Rav Huna said, wicks and oils that the sages said are not used for Ner Shabbos (Shabbos lights), shall not be used for Ner Chanukah either on Shabbos or during the week. (Shabbos 21:1, etc.)
The opening in the Gemoroh of the Sugyoh (subject) of Chanukah is one that symbolizes the great purity we must have by selecting the best wicks and using the purest of oils. [Surely olive oil is preferred as a symbol (remembrance) of the Nes (miracle)]
Tzaddikim and Seforim HaKedoshim delve into these aspects and derived a very important point. Although the Menorah is to be lit with the best wicks and purest oil, we find another aspect in the lighting of the Menorah, that is its location! Surprisingly, it is to be placed outside רשות האמט םוקמ םיברה on the left side - משאל, and lower than ten tefachim -למטה מעשרה . All of the above symbolizes that whichever situation a Jew finds himself in, the purity of the light of Chanukah raises him. As the Shechinoh comes down to uplift and correct all those who wish to see the light of Hashem.
