Remember that refrigerant itself has very low viscosity. Solutions of oil and refrigerant have a viscosity between that of the oil and that of the refrigerant. As more refrigerant dissolves in the oil, the solution becomes less viscous.
The Element Earth. The earth signs are Taurus, Virgo, and Capricorn. The earth signs are stable and practical, and they are sometimes thought of as stubborn. They are concerned with the mundane details of the world, and what really exists. They can have trouble with non-tangible ideas, however.
Being born on the cusp or the borderline of the previous sign to you is actually a karmic blessing Capricorn. These are the dates of the first few days of Capricorn, that is between the 21st and 28th of December. If you are indeed born between these dates you borrow considerably from the star sign before you.