I have posted on this before. When my 2014 Plus 4 gets hot for example on a hot sunny day and I am driving for a couple of hours, the brakes diminish significantly. The pedal nears the floor and the braking response is not good to the extent I am concerned about taking the car out. I have had the car serviced and brake fluid changed. I had DOT 4 fluid replaced with DOT 4. The brakes in cold weather are fine. Should I be looking at changing the fluid to DOT 5.1? Does this affect anything else? Do you think this would assist with my issues?
Thanks
