"Please no bad news"- lol. Consistent air pockets are not a natural function of a healthy cooling system, and can indicate an issue. Air in the cooling system can give weird drive ability symptoms, and if left unchecked can cause harm to your engine. Air does not dissipate heat as well as coolant- This can led to senors getting false readings (from the super hot air pockets 2 times the temp of the surrounding coolant), and burning areas not intended to deal with that amount of localized heat, like rubber gaskets, hoses, thermostats, head gaskets....Sounds like you have some unhealthy symptoms going on- you need to find a good doctor in your area that can perform the necessary tests to give you information of 'whats so', so you can make an educated decision on how to proceed. Other wise you may end up chasing you tail for a very long time, which also can be expensive.