What reduces oil viscosity?

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Multiple Choice

What reduces oil viscosity?

Reducing oil viscosity is achieved through dilution. Dilution means mixing the oil with a lighter hydrocarbon diluent to form a blend that flows more easily. The lighter molecules interrupt the strong intermolecular forces and reduce the overall resistance to flow, so the viscosity drops as more diluent is added (within practical limits). Thinning describes the end result but isn’t the named process; dilute refers to the state of the mixture rather than the action of lowering viscosity; hydration would introduce water, which doesn’t help and can cause emulsions or separation.

Reducing oil viscosity is achieved through dilution. Dilution means mixing the oil with a lighter hydrocarbon diluent to form a blend that flows more easily. The lighter molecules interrupt the strong intermolecular forces and reduce the overall resistance to flow, so the viscosity drops as more diluent is added (within practical limits).

Thinning describes the end result but isn’t the named process; dilute refers to the state of the mixture rather than the action of lowering viscosity; hydration would introduce water, which doesn’t help and can cause emulsions or separation.

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