Tag Archives: diff cooler

Diff’s Hot, Take it Easy – Rear Differential Cooler R&D, Part 5: A Tale of Two Track Days Part 2

At first, admittedly, it didn’t look like we were flexing as hard as we could with the Focus RS. With our full PTU/RDU cooling kit installed, we extended the time on the track with all four wheels producing power by about three minutes. However, after some reassessment, Dan transplanted the PTU temperature sensor from the gear oil into the coolant … Continue Reading ››