Why should an oily rag be used to wipe a cylinder after ridge removal?

Why should an oily rag be used to wipe a cylinder after ridge removal?

• A. Because the rag absorbs oil
• B. Because the metal cuttings will stick to it
• C. Because it prevents rust
• D. Because it cleans best

Answer: (B)

After ridge removal, small metal shavings are created inside the cylinder bore. An oily rag provides a surface that the metal chips will cling to because the oil makes the rag sticky. As you wipe, the chips stick to the rag instead of falling into the engine or between the piston rings, helping keep debris out of critical areas. The main purpose isn’t absorbing oil, preventing rust, or simply cleaning well—the key idea is capturing and removing the metal cuttings so they don’t cause damage.

After ridge removal, small metal shavings are created inside the cylinder bore. An oily rag provides a surface that the metal chips will cling to because the oil makes the rag sticky. As you wipe, the chips stick to the rag instead of falling into the engine or between the piston rings, helping keep debris out of critical areas. The main purpose isn’t absorbing oil, preventing rust, or simply cleaning well—the key idea is capturing and removing the metal cuttings so they don’t cause damage.