Canadian Entry To Practice (CETP) Practice Test

What is the primary use of HD-5 propane?

1. Cooking fuel

2. Motor fuel

3. Refrigeration

4. Heating

The correct answer is: Motor fuel

HD-5 propane is primarily used as a motor fuel. It is a specific grade of propane that meets certain purity and performance standards, making it especially suitable for use in vehicles that run on propane, such as certain types of buses, fork lifts, and passenger vehicles. The formulation of HD-5 propane ensures that it operates efficiently in internal combustion engines, providing the necessary energy output and combustion properties for optimal performance. Although propane can be used for cooking, refrigeration, and heating, those applications typically involve different grades or mixtures. Cooking fuel often does not require the same stringent purity as motor fuel; refrigeration applications might involve specific blends that suit chillers or cooling systems; and heating applications can use various forms of propane depending on the specific needs of the heating system. Therefore, while HD-5 propane can technically be used in these other capacities, its primary designation and most common use is as a clean-burning motor fuel, making it a preferred choice for alternative fuel vehicles.