Title: Explain the purpose of crankcase oil, its properties, and selection criteria.
Course: Agricultural Power Systems (18402-I) > Section: Using Fuels, Lubricants, and Fluids

Explanation should include

- describing how crankcase oils protect engines
- explaining crankcase lubricating oil properties
- selecting oil based on criteria set forth by manufacturer specifications (using Society of Automotive Engineers [SAE] grades)
- describing the purpose of additives.

Process/Skill Questions:

- Which oil would be best to use in a certain application given a geographic location and season of the year?
- Why are synthetic oils manufactured?
- What are additives? Why are they used?
- Why is the phrase “start and end with the owner’s manual” important to understand?
- What is viscosity, why is it important, and how does temperature affect viscosity?
- How are oil filters different, and what are the most important filtration properties?