I have an Orvis wonder line on one of my spools. What do I use to condition it with? It doesn't come with a conditioning towel. Orvis suggested dish soap or their Zip Juice just to clean it. Zip juice looks like Windex. What is it?

The first half of the line (the part that gets used the most) feels dry. The last half feels like it has silicone on it. It's a good line and I don't want to ruin it. Anyone have any good ideas?

Denny