摘要:Four samples of the top SYNTOL HD 265 PLUS brake fluid with 0.2 %,1.7 % ,3.6 % and 5.9 % by weight water content were prepared in the laboratory. Ubbelohde viscosimeter was used for the determination of the brake fluid kinematic viscosity. The results have proved that the change of brake fluid viscosity is affected not only by temperature but by water content,too.