Hi everyone, I'm sure this topic has been done to death, but my 07 Fusion, FNR5 tranny, 2.3L is running stupid. It now has 100,025 miles on it. For a while now it run fine, but when you coast down hills the speedo would go erratic and the mileage numbers would flatline ----- then on regular roads and grades back to normal. Puts out a code P0720 OSS sensor. A week ago the speedo quit for good and the numbers are still flatlined no matter the road, I installed a new OSS sensor and cleared the computer, no change still not fixed. As a side note the fluid that ran out of the sensor hole was BLACK not red at all! Any advice??