Correct answer
The manufacturer-specified engine oil.
Engine oil, with the viscosity and approvals specified by the manufacturer. Do not substitute gear oil or select oil solely from turbocharger speed. The circuit supplies the bearings and returns oil to the engine. Warm-up and shutdown procedures depend on the vehicle and use; one minute of idling is not a universal rule.
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The manufacturer-specified engine oil.
Any low-viscosity oil, regardless of engine specifications.
Gear oil selected solely for its high viscosity.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
En un motor diésel con turbocompresor convencional lubricado por el circuito de aceite del motor, ¿qué aceite lubrica sus cojinetes?
- El aceite del motor indicado por el fabricante.(Correct answer)
- Valvulina elegida solo por su alta viscosidad.
- Cualquier aceite de baja viscosidad, sin atender a las especificaciones del motor.
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