Which statement best reflects proper lubrication practices for pneumatic systems?

• A. Use any oil grade
• B. Use the correct oil grade and lubrication intervals
• C. Never lubricate
• D. Change oil type every week

Answer: (B)

Lubrication in pneumatic systems is essential to keep moving parts sliding smoothly, reduce wear, and protect seals and metal components from corrosion. The best practice is to use the correct oil grade and follow appropriate lubrication intervals. The oil grade matters because viscosity and additives must match the system design and the compressor’s recommendations; using the wrong grade can cause sluggish operation, excessive wear, or oil carryover that fouls downstream components. Establishing lubrication intervals ensures parts receive consistent protection without over-lubricating, which can contaminate filters, attract dirt, or create oil buildup. Some systems are designed to be oil-free, but for those that require lubrication, selecting the right oil and maintaining proper intervals is the key to reliable, long-lasting operation.