Originally Posted by GraphiteGhost

.



DOT-4, its what is called for. ALL DOT-4 meets the (at least) minimum specifications (FOR THE FLUID INSTALLED). No need to overthink or over spend unless you have deep pockets. Have fun discussing anything else but the facts here. BTW, 180 (Dave) is correct, do not mix fluids (or IMHO use less than DOT-4, or DOT-5). Any other fluid may be detrimental to your brakes when you need them most. The XF needs a higher boiling point fluid due to its design being a nimble sports car so it is expected the brakes get hotter as demand through agile driving increases (Like the Tail Of The Dragon?). Nuff said!
.