After deciding to change the inverter coolant, I thought it might be a good idea to also change the coolant in the engine. What a process! Far more complicated than on any vehicle I have done it on before and air in the system seems to be a problem. After reading through the many threads on here, I looked on YouTube and found EyeOnAiman. Easier watching someone else doing it and the method looks like it should work OK. However, before jumping in, I wondered whether anyone had used his method or has any thoughts on what he does?