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Comparison of two engine efficiencies. Number 1 is in the reverse cycle.

Engine Efficiency

Comparison of two engine efficiencies. Number 1 is in the reverse cycle.

A lubricant is a substance introduced between two moving surfaces to reduce the friction between them, improving efficiency and reducing wear. They may also have the function of dissolving or transporting foreign particles and of distributing heat.

Oil Can

A lubricant is a substance introduced between two moving surfaces to reduce the friction between them,…