Which outcome is observed when lubricating oil excessively shears?

💡 Explanation

When a lubricating oil undergoes degradation causing it to excessively shear, the non-Newtonian property of shear thinning impacts the **pseudoplasticity** of the fluid. Its viscosity decreases at high shear rate because the internal links within the fluid break. Therefore, viscosity drops rather than increasing damping due to the internal friction modification.

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