What is purge Mist?

• A. Adding mist to wet sump to prevent moisture from coming in
• B. Removing mist from the system
• C. Generating mist to lubricate
• D. Cooling oil with mist

Answer: (A)

Purge mist is a controlled amount of oil mist introduced into the wet sump to keep moisture out. By creating a slight positive pressure with the mist, humid air is displaced and moisture cannot enter the sump when the system is opened or venting occurs. This helps maintain oil cleanliness and prevent water-related problems like emulsions or corrosion. The best choice reflects this purpose: adding mist to the wet sump to prevent moisture from coming in. It’s not about removing mist, generating mist for lubrication, or cooling the oil with mist.