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CDifficulty 3/5

With the same oil and engine speed, other factors being equal, which oil condition can favour lower pressure by reducing its viscosity?

Correct answer

Very hot.

Very hot oil loses viscosity and can favour lower pressure. Insufficient pressure alone does not establish that temperature: low oil level, leaks or faults can also cause it. If a low-pressure warning appears, stop safely and follow the manufacturer’s instructions; do not continue assuming heat makes it normal.

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All options

  • Cold.

  • Very hot.

  • Warm.

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