Can you use WD40 for treadmill lube?

No, WD-40 is not recommended for lubricating treadmills. It is a penetrant and cleaner, not a suitable lubricant for the belt or deck of a treadmill. Instead, use a silicone-based lubricant specifically designed for treadmills to ensure proper functioning and to avoid damage to the machine. Always refer to the manufacturer's guidelines for the best maintenance practices.