It appears that I will be getting an Onyx Vibe as a Christmas gift. What I could really use is a ball for heavier oil. Now, I've heard stories of some folks taking a Blue Vibe, setting it up for oil, and getting good results. Can the same thing be done with an Onyx, and if so, how do you go about doing it? Any war stories about the Blue or the Onyx Vibes on oil?
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