Question

1. which oil has the highest viscosity when the engine is cold? 5w - 30 0w - 40 0w - 30 10w - 30

Explanation:

The "W" in oil viscosity ratings stands for "winter." The number before the "W" indicates the oil's viscosity at low (cold) temperatures. A higher number before the "W" means higher viscosity (thicker) at cold temperatures. Among the options \(5W - 30\), \(0W - 40\), \(0W - 30\), and \(10W - 30\), the \(10W - 30\) has the highest number (\(10\)) before the "W".

Answer:

10W - 30