Correct answer
A multigrade oil.
A multigrade oil is one that meets the requirements of more than one grade in the SAE viscosity classification and can be used over a wide temperature range. The number 15W actually refers to the ease with which the oil can be 'pumped' at low temperatures; the lower the 'W' number, the better its low-viscosity properties.
Practice more C1 licence questions
A self-check with exam-style questions on Mechanics and maintenance. Free, no signup.
All options
A single-grade oil.
A multigrade oil.
An oil exclusively for diesel engines that are very sensitive to temperature changes.
Editorial status: editorially approved. This status does not certify legal review. Report a correction
Share this question
Keep studying
Related questions
- When driving on a stretch of road that is flooded with water, what consequences can a shock absorber in poor condition have?
- What risk does brake overheating from excessive use, for example on a long descent, create?
- In a diesel engine with a conventional mechanical injection pump and rack-controlled fuel delivery, which assembly includes the governor that limits maximum engine speed?
- Under comparable conditions and as a general rule, tyre grip is usually lower when driving on…
- In an electrical diagram with two identical compatible 12 V nominal batteries suitable for series connection, which link gives 24 V nominal between the two free terminals?
- Light rain does not significantly reduce visibility. There is no fog, smoke, dust or other visibility-reducing condition, and you are not on a narrow road section with many signposted bends. May you switch on fog lights solely because of that rain?