I know the dot 4 fluid naturally absorbs moisture over time. And my question is should I change it before the recommended miles? Just don't know if it's worth the time and money to do it. Or if the owners manual recommendations is sufficient. It's a 2016 chief dark horse i purchased new off the showroom floor. It only has 6500km (or around4000 miles) on it. Just wondering what others have done with their bikes is all.