I searched first but didn't find what I was looking for. The PO put green coolant in, so I'm replacing with green. What brand of green coolant are you using? This "Prestone® antifreeze/coolant with proprietary Cor-Guard™ extended-life technology" https://www.grainger.com/product/PRESTONE-Antifreeze-Coolant-48RD30 isn't really a conventional green coolant, but does it work fine? Or is there something better?