As the title asks, what is the correct coolant? I have a pair of 2005's, one N/A and one supercharged. We bought them cheap this July, they needed a little TLC but we took them out probably about 8 times since and they have performed awesome after I got them running and did some regular maintenance. Coolant is about the last thing I need to do and want to do over winter. We are also buffing out the hull removing all the oxidation. Started today, doing a quick job (just rubbing and polishing compound, no wetsanding) and it's turning out pretty decent. Any help for what the appropriate coolant would be is much appreciated. Some people think it's ok to mix and match but I've experienced the disaster that can happen when you do so... Teaser pics of the start of hull buffing attached for attention...