Silver_car: Sorry for the late reply. My ayc is using redline (XX to 140). Sorry for the blur technical fact as I'm still not good in it. Same goes for your engine oil, used a heavier one. Reason being, our climate is very humid and bear in mind its very hot and using a lighter oil, it will not be effective after sometime.
Usually AYC oil change will be done between every 20 - 30km (I think). To know whether your AYC oil is good or bad, the oil will be very smooth when it is being flushed as compared to the glued type of formed.
The electronics in our car once the fault code has been reset and checked will be running fine. But as for AYC, it is the mechanism that creates the problem.
My friend has a problem with his front AYC (due to using ligher oil) and his bearing was makming some noise. Usually, it can be fixed but have to see how bad it is. If AYC is really bad, you can hear the sound even while you are driving at low speed. AYC only performs in condition when we take hard corners etc..
If I'm not mistaken, each AYC cost abour RM1.2 > (not sure for 2nd hand or brand new).
Did you manage to give the number (I posted) a call?