What it is. Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer is a flexible silicon polymer. What it does. Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer is used to adjust the thickness of liquid cosmetic products.Side effects. Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer is generally considered to be safe.inyl Dimethicone/Methicone Silsesquioxane Crosspolymer is used to adjust the thickness of liquid cosmetic products. Side effects. Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer is generally considered to be safe.
In petrol (gasoline) engines, the top piston ring can expose the motor oil to temperatures of 160 Â°C (320 Â°F). In diesel engines the top ring can expose the oil to temperatures over 315 Â°C (600 Â°F). Motor oils with higher viscosity indices thin less at these higher temperatures.
The difference is when the viscosity is tested at a much colder temperature. For example, a 5W-30 motor oil performs like a SAE 5 motor oil would perform at the cold temperature specified, but still has the SAE 30 viscosity at 210Â° F (100Â° C) which is engine operating temperature.hen you see a W on a viscosity rating it means that this oil viscosity has been tested at a Colder temperature. The numbers without the W are all tested at 210Â° F or 100Â° C which is considered an approximation of engine operating temperature.