Suzuki V-Strom 650 Brake Fluid Change: What I Found on My Used Bike
I didn't know when the brake fluid on my used V-Strom 650XT had last been changed. Then I opened the rear reservoir and found brown deposits sitting inside. Here's what I found, how I changed the fluid and what I learned.
When I bought my 2020 Suzuki V-Strom 650XT, I had some service history with the bike, but I couldn't establish exactly when the brake fluid had last been changed. Once I opened the reservoirs, I was glad I checked. The rear brake fluid reservoir had brown deposits sitting in the bottom and around the corners. At the front, there was also some white crust around the reservoir cap. That was enough for me. Rather than wondering how old the fluid was, I decided to flush the old fluid from both braking systems, replace it with fresh DOT 4 and have a proper look at the brakes while I was there. If you've bought a used motorbike and don't know when the brake fluid was last changed, this is one of those maintenance jobs that's worth checking rather than assuming has been done. Quick answer: changing the brake fluid on a V-Strom 650 On my 2020 Suzuki V-Strom 650XT, I replaced the old brake fluid with fresh DOT 4. For the front brakes, I removed most of the old fluid from the master-cylinder reservoir with a syringe, refilled it with fresh fluid and then flushed the system through the brake calipers. I started with the left front caliper before moving to the right. The rear uses essentially the same bleeding process, although accessing the reservoir requires considerably more work because it's hidden behind the right-hand side panel. The bleeding sequence I used was: Pressure and hold → open the bleed nipple → close the nipple → release the brake lever → repeat. The reservoir needs to be monitored and topped up during the process so it doesn't run dry and introduce air into the hydraulic system. Why I changed the brake fluid The bike had relatively low kilometres when I bought it, but low kilometres don't necessarily mean every time-based maintenance item has been completed. I couldn't confirm when mine had last been replaced, and Suzuki specifies periodic brake-fluid replacement rather than simply waiting for the bike to cover a particular distance. The condition inside the rear reservoir made the decision…