Daaaammm, it looks great!
Wood and olive oil works great. I clean my Series I from head to base, with a dry cloth (Lams wool) and then added a dab of olive oil, and rubbed lightly, and it looks great. The shine on the fret ebony wood shines too.
I never thought of using olive oil would work so well, but it does a great job. If someone posted this discovery or other methods, please share.