Perhaps this is just a coincidence--I bought 2 tires for my SUV one week, and two the next. The first time they said my brake fluid was yellow and had no copper in it, and I should have it flushed out for $88.
I learned that yellow brake fluid is not unusual. My brakes worked fine. After the second set of tires, my brakes became mushy. Long story short, the brake fluid is contaminated, and it will most likely be expensive to replace rubber items.
At least $1000. No one else touched the brake fluid. Why did they even look at it to replace tires? And why did I have the problem not long after the tires were put on?
I am going to have the mechanic save me some fluid to see if there is petroleum products it in, but I don't think I have a leg to stand on. Just a very very strange coincidence.
Monetary Loss: $1400.