Why should you avoid overfilling the air system with excessive oil-based lubricants during maintenance?

Pick an answer

1. Excess oil can migrate into the air lines and contaminate valves and chambers
2. Extra oil-based lubricant only helps seals last longer, nothing else worth noting
3. It only matters for the trailer's electrical system
4. Oil-based lubricants have no interaction with the air brake system

Correct!

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