One may use any type of oil or wick for the Ĥanuka candles, including those that are unusable for Shabbat candles.The more beautifully the candle burns, the more beautiful the mitzva is, because the miracle is publicized more effectively.
I grew up lighting Chanuka candles inside the house. In my community, the uniform practice is to do so outside. I think that is great, but I miss seeing them inside my house. Is it permitted to light a second chanukia indoors (could it be bal tosif)? If permitted, what is the best way to do it?
God Himself initiated our faith. It was not intellectual investigation that brought us face to face with the Creator; rather, it was the Almighty who brought us close to Him.