For the life of me I can figure out what I have done to completely disable the oil temperature display. I noticed that the car was set to two yearly service but the dealer said it needs annual / 15,000km servicing to maintain warranty (that's what they say here in Aus), so I went abou changing the adaptations to suit and as a result the temperature display went. Looking at the debug log I have reversed everything I did and still no joy. Anyone know what mcodeing / adaptation combinations are t