Oil viscosity, change intervals, coolant, brake fluid, transmission fluid, and washer fluid.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What does the letter W in oil grades like 5W-30 mean?
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Winter - indicates the cold-temperature viscosity rating- In 5W-30 motor oil, what does the first number (5) represent?
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Cold-temperature viscosity; lower numbers flow better in freezing conditions- In 5W-30 motor oil, what does the second number (30) represent?
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Hot-temperature viscosity; measures thickness at operating temperature- What is the difference between monograde and multigrade oil?
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Monograde has one viscosity rating; multigrade adapts across cold and hot temperatures- What oil grade does a typical sedan require?
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5W-30 or 10W-30, but always check the owner's manual for the exact recommendation- Why does thinner oil help with cold engine starts?
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Thinner oil flows more easily at low temperatures, reducing resistance and allowing the engine to turn over- What is the benefit of a higher hot-temperature viscosity rating?
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It maintains film strength and protection when the engine reaches operating temperature- Name one advantage of using thicker oil (like 10W-40).
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Better protection at high temperatures and higher engine loads- Name one disadvantage of using thicker oil (like 10W-40).
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Harder cold starts and reduced fuel economy in cold weather- How often should conventional oil be changed?
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Every 3,000 to 5,000 miles, depending on driving conditions- How often should synthetic oil be changed?
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Every 7,500 to 10,000 miles or longer, depending on the vehicle and oil type- What driving conditions shorten the oil change interval?
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Towing, city driving with frequent stops, high heat, dusty roads, and short trips- What is the primary purpose of engine coolant?
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To absorb heat from the engine and carry it away to prevent overheating- How does coolant protect the engine from freezing?
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Antifreeze mixed in the coolant lowers the freezing point to well below water's normal freezing point- What does green coolant typically indicate?
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Conventional silicate-based antifreeze, commonly used in older vehicles
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