Make sure you search, this has been discussed ALOT. There has been many debates about problems with the orange coolant; some people say don't use it, and other people say use it. If you do want to switch, however, you need to do a FULL FULSH. ALL of the green coolant needs to be completely removed before you start using orange. I persoanlly switched to orange, and like it better (protects to lower temps). I did a full drain of the green stuff, a full flush w/ a cleaner, and more rinses with water. The final decision is totally up to you.
