1. Some oil swelling may occur, and oil viscosity can still be significantly reduced.

2. Meanwhile, some of the most sensitive factors affecting nitrogen injection are miscible injection ratio, formation permeability, relative permeability and its oil viscosity.

3. This underestimation will increase with a larger difference between the cold and hot oil viscosity and is also more relevant to early times (economics).

4. The dry clutch eliminates the power loss from oil viscosity drag on the engine, even though the engagement may not be as smooth as the oil-bath versions, but the clutch plates can wear more rapidly.