Primer oil serves two purposes. Which are they?

Primer oil serves two purposes. Which are they?

• A. Lubricates and seals
• B. Improves efficiency; Anticorrosive
• C. Reduces power consumption
• D. Increases fuel mileage

Answer: (B)

Primer oil is chosen for two primary roles: it helps the engine run more efficiently and it provides anticorrosive protection. When it reduces friction and wear in moving parts, the engine operates more smoothly with less energy lost to resistance, which translates to improved efficiency. The anticorrosive aspect comes from corrosion inhibitors in the oil that form a protective film on metal surfaces, guarding against rust and deterioration from moisture, fuel, and air, thereby extending component life. The other options describe broad outcomes or common oil benefits, but they aren’t the explicit functions of primer oil: lubrication and sealing are general oil roles, while reducing power consumption or increasing fuel mileage are indirect results of better efficiency rather than separate purposes.

Primer oil is chosen for two primary roles: it helps the engine run more efficiently and it provides anticorrosive protection. When it reduces friction and wear in moving parts, the engine operates more smoothly with less energy lost to resistance, which translates to improved efficiency. The anticorrosive aspect comes from corrosion inhibitors in the oil that form a protective film on metal surfaces, guarding against rust and deterioration from moisture, fuel, and air, thereby extending component life. The other options describe broad outcomes or common oil benefits, but they aren’t the explicit functions of primer oil: lubrication and sealing are general oil roles, while reducing power consumption or increasing fuel mileage are indirect results of better efficiency rather than separate purposes.