Final answer:
The correct lubricant to use when lubricating backing plates and brake components is high-temperature grease.
Step-by-step explanation:
The correct lubricant to use when lubricating backing plates and brake components is high-temperature grease. High-temperature grease is specifically formulated to withstand the heat generated by the braking system and provide effective lubrication. It is designed to remain stable and provide adequate lubrication even at high temperatures.