Which primer is environmentally friendly and does not require lubrication?

• A. Oil less primer
• B. Grease-based primer
• C. Water-based primer
• D. Oil-less primer

Answer: (A)

The main idea here is choosing a primer that minimizes environmental impact and doesn’t require lubrication during use. An oil-less primer is formulated to operate without any oil-based lubricants, so it avoids petroleum solvents and oil residues. This makes it more environmentally friendly and means no lubrication is needed for its priming action, simplifying maintenance and reducing potential contamination.

Grease-based primer relies on grease, which isn’t as eco-friendly and adds lubrication needs. Water-based primers are cleaner and lower in solvents, but they don’t specifically address the no-lubrication requirement as directly. Oil-based primers depend on oil, which carries environmental concerns and lubrication needs.