Daily Double. 2 separate folks insisting WD 40 isn't a lubricant. (Both A. I. and WD 40's website disagree with them.) Aqua Lube Personal Lubricant Mayer Laboratories, Inc why is water called the universal solvent Which lubricants are best for pain with penetrationwater vs silicone vs oil? The Womens Health Clinic Importance of Water as a Universal Solvent, Description:, Water is called the universal solvent because it has the ability to dissolve a wide variety of substances, including salts, sugars, acids,