Why do you need to change the oil in a vacuum pump?

Changing the oil in a vacuum pump is essential to maintain its efficiency and extend its lifespan. Over time, the oil can become contaminated with moisture, debris, and degraded lubricants, which can lead to wear and reduced performance. Fresh oil ensures proper lubrication, cooling, and sealing within the pump, helping to prevent mechanical failure and maintaining optimal vacuum levels. Regular oil changes also help to avoid costly repairs and downtime.