TD5 oil cooler..
again.............
third time lucky. both previous times the orings let go and matrix was tested as fine, but i suspect it was leaking still while hot as i always had telltale oil in the coolant, that kept getting written off as leftover from previous oring failure.
a word to the wise. been less than 5 months since orings were replaced and the matrix is now well corroded. so much for OAT stopping corrosion. going back to good qual green coolant now. at least i might be bale to keep it in the radiator :)

