I have a 91 MR2 and servicing the coolant isn't like most cars I have owned. You have to open two Valves in the front and attach service hoses up to them and then add the coolant to keep air bubbles from getting in the system. It can be a pain to get all the air out too. I guess my question is the NSX tricky to service the coolant on too is this a thing with all mid-engine cars?
