AG Mechanics CDE Practice Exam

A foam filter needs to be oiled for which reason?

1. Facilitate air passage

2. Ensure a tight fit

3. Make it last longer

4. Trap dust particles

The correct answer is: Facilitate air passage

A foam filter needs to be oiled in order to facilitate air passage. Oiling the foam filter helps to trap and hold dirt particles while still allowing air to flow through the filter efficiently. This process ensures that the engine receives a sufficient amount of clean air for proper combustion, which is crucial for optimal performance and longevity. Therefore, the correct answer is to facilitate air passage by oiling the foam filter.