Massachusetts Oil Burner License Practice Test

Using additives or kerosene to lower viscosity serves what purpose?

1. Increase oil flow rates during cold weather

2. Enhance the nozzle pattern

3. Reduce the risks of leakage

4. Aid in easier ignition

The correct answer is: Increase oil flow rates during cold weather

Using additives or kerosene to lower viscosity serves the purpose of increasing oil flow rates during cold weather. When temperatures drop, oil tends to become more viscous or thick, which can impede its flow through the fuel lines and into the burner. By adding specific substances, like additives or kerosene, the viscosity of the oil can be reduced, allowing it to flow more freely. This is particularly important in heating systems where a consistent and efficient flow of oil is essential for maintaining optimal performance and ensuring that the burner operates effectively and reliably during colder temperatures. The other options, while they may relate to oil burner performance, do not directly address the primary function of lowering viscosity with additives or kerosene. Enhancing the nozzle pattern, for example, is more closely linked to nozzle design and maintenance rather than viscosity. Similarly, reducing the risks of leakage pertains to proper sealing and maintenance of connections rather than the oil's viscosity. Finally, while lower viscosity can aid in easier ignition, the main benefit is the increase in flow rates, which is crucial for overall efficiency in cold conditions.