Title: Check the transmission oil level, type, and condition.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Drive Train

Checking should include

- following manufacturer guidelines
- using the proper method (e.g., dipstick, fill plug, transmission keypad, sight glass to check level)
- sending the scheduled oil sample to a lab.

Process/Skill Questions:

- When a vehicle is filled with an oil type not recommended by the manufacturer, should the same oil type be used again?
- Why should a transmission oil sample be sent to a lab?