![Any idea what hydraulic fluid is in these "Power" brakes? No markings that I can see. On a 2022 Trek Dual Sport 2. : r/bikewrench Any idea what hydraulic fluid is in these "Power" brakes? No markings that I can see. On a 2022 Trek Dual Sport 2. : r/bikewrench](https://i.redd.it/k3ahhzs7b0ea1.jpg)
Any idea what hydraulic fluid is in these "Power" brakes? No markings that I can see. On a 2022 Trek Dual Sport 2. : r/bikewrench
![Basic Bicycle Anatomy 101 - Brake Systems - South Carolina Bike Shop - Greenville Spartanburg Andersen Basic Bicycle Anatomy 101 - Brake Systems - South Carolina Bike Shop - Greenville Spartanburg Andersen](https://www.sefiles.net/merchant/823/images/site/cantilever_brakes_600w.jpg)
Basic Bicycle Anatomy 101 - Brake Systems - South Carolina Bike Shop - Greenville Spartanburg Andersen
![Trek Bicycle Disc Brakes | Trek Bike Disc Brake | Trek Bicycle Parts | Trek Bikes Parts - Bicycle Brake - Aliexpress Trek Bicycle Disc Brakes | Trek Bike Disc Brake | Trek Bicycle Parts | Trek Bikes Parts - Bicycle Brake - Aliexpress](https://ae01.alicdn.com/kf/H58299f458a384a558a6066d51bf0ecdds.jpg_640x640Q90.jpg_.webp)
Trek Bicycle Disc Brakes | Trek Bike Disc Brake | Trek Bicycle Parts | Trek Bikes Parts - Bicycle Brake - Aliexpress
![Amazon.com : Outroad Fat Tire Mountain Bike 26 Inch Wheels Adult Bicycle, 21 Speeds Sand Trek Bike, Double Disc Brake Suspension Fork Big Tire Anti-Slip Bikes (Black, 4 inch Width Tire) : Amazon.com : Outroad Fat Tire Mountain Bike 26 Inch Wheels Adult Bicycle, 21 Speeds Sand Trek Bike, Double Disc Brake Suspension Fork Big Tire Anti-Slip Bikes (Black, 4 inch Width Tire) :](https://m.media-amazon.com/images/I/71+1jI9tdiL._AC_UF1000,1000_QL80_.jpg)