Brake fluid composition
Brake fluids are composed of 3 main components.
SOLVENT 60 to 90%
Polyglycols have a high viscosity, therefore it is essential to dilute them with a product with low viscosity (polyglycol ethers). Polyglycols ethers play the role of solvent in the fluid. They have to dissolve polyglycols and all other components in such a way to get a single-phased fluid offering satisfactory lubrication under all temperatures.
LUBRICANT BASIS 5 to 30%
Polyglycols are used as lubricants in proportion of up to 30% in brake fluids. They are acquired by reacting alkylene oxides (ethylene and propylene) with bifunctional components like diols or water.
ADDITIVES 2 to 5%
Brake fluids regularly contain up to 5% of additives. Corrosion inhibitors are added to protect the brake system metals from corrosion and antioxidants are necessary to decrease the oxidative decomposition of glycol ethers polyglycols and to delay the formation of acidic decomposition products and resins.
These two inhibitors' categories are important to ensure a long-term and satisfactory brake fluid service life.
Please note that all these are mainly recommendations. You should follow the steps carefully and remember that you are responsible for these actions. So, be sure that you have both necessary equipment and skills. If not, we suggest that you should address to a qualified mechanic so as to implement these operations. We also recommend that you recycle your used oil by taking it to an oil change center or a waste recycling facility. Any type of oil can be reused: car oil, motorbike oil, truck oil, tractor oil, boat oil and others. In recycling, do not mix different products such as brake fluid, coolant and engine oil. Each fluid has to be recycled separately. Even small quantities of coolant or brake fluid in used engine oil could disrupt or halt the recycling process.