Did some looking into this temp thing. Service manual doesnt mention any calculation. But there is a calculation algorithm using combination of engine coolant temp and the oil temp sensor.
HPtuners allows you to select whichever method you want for oil temp.
Oil Temp Config lets you set how the Oil Temp is calculated and displayed the options are:
- Calc ECM (oil temp is calculated from ECT and a few other things)
- Calc ECM & Disp Sens (ECM uses calulated oil temp but gauge uses sensor measurement)
- Sens ECM (ECM uses sensor measurement if no sensor faults exist)
- Sens ECM & Disp (ECM & gauge use sensor mesaurement if no faults exist)
