Hi, I own a 2011 Honda Fit with ABS and the service manual recommends to change the BF every 3 years. The fluid has an apple juice type of color. Can I "drain-and-fill" the master cylinder with a syringe then add new? will any air run into the lines? and is it ok to leave old(ish) fluid inside the lines or do I really have to bleed them to a 100% change? PS. I do not own a vacuum and I lent all my tools out.