This comes straight out of the MB maint manual - model years 1981-1993 - job #4210
"Brake fluid must be changed once a year, preferably in spring on models 124 and 201 through 03/91 production as well as models 107, 123, 126. On models 124 and 201 starting 4/91 production, and models 129 and 140 the brake fluid must be changed once every two years."
Brake fluid is hygroscopic-tends to absorb water, thereby lowering the boiling point of brake fluid - not good.
1991 300-SEL - Model 126
M103 - SOHC
James Madison - Oppressors can tyrannize only when they achieve a standing army, an enslaved press, and a disarmed populace.
Liberty Firearms Training - After years of trying to regulate California criminals with a never ending stream of gun control laws they have still not given up with the belief that if they make something a crime that criminals will miraculously start obeying the law.