I'm wondering what type of antifreeze most others are using? I changed to the Extended Life in my last bus, but haven't decided if I will in this one. If I remember correctly, the advantage to the Extended was that you don't have to check with the strips, use blank filters and only add the extender after 3 years.

Gil, have you had to do anything extra. It should be about time for you to add the mid-term extender to yours.