Connect the catheter and syringe, extract 5-10ml of the treadmill oil. 100% Silicone Treadmill Lube for Belt: Non-toxic, odorless, high temperature resistant, does not freeze at low temperatures (-30 degrees Celsius) and can withstand high temperatures up to 300 degrees Celsius, colorless and transparent pure silicone oil silicone lubricant for treadmill belt specifically tailored for treadmills.
The Lubricant for Walker Silicone, 4oz, No Odor 2 Pack is a great product for gym equipment use.