Perhaps I can help with the coolant issue. I researched this almost an entire day a while back. I came to the conclusion that there is a specific type of coolant that the Asian engineers decided works best in our cars. The coolant should be made out of ethylene glycols, phosphates (inorganic acid salts) with Organic Acid Technology (which makes it a Hybrid Organic Acid Technology or "HOAT"), no silicates, and no borates or amines (2-EHA is an amine). This means that most coolants on the shelf at your local auto parts store will NOT fit the bill. BUT, it does not have to be the Toyota red or pink coolant, as long as the ingredients are the same. There are a couple of non-Toyota coolant brands that I know of that fit the bill: Beck/Arnley, Pentofrost A1 (Made by a German company named Pentosin), Zerex Asian Vehicle formula (but I can't find it in concentrated; only pre-mix). There may be others, but as long as it's a phosphated OAT (HOAT) with no silicates, no borates and no amines, you are good to go. The color DOES NOT MATTER. It's just a dye. As long as the ingredients are the same, that is what counts. Do you think your Toyota can sense what color dye is in your coolant? Huh? I personally don't mix the colors, but if you do it's OK as long as the ingredients are the same. I confirmed this with a Beck/Arnley specialist who told me that their four colors (Red, Pink, Blue, Green) were actually the exact same thing (two are concentrates and two are diluted with a slightly different additive). The colors are ONLY for ease in identification of the coolants because certain auto manufacturers used certain colors. Toyota uses Red (concentrated) or Pink (diluted). The Toyota Red is forward compatible to the newer years as well. The Toyota Pink is not backwards compatible for the older years, like our Camrys. Other Asian companies may use Blue, Green, or whatever. The coolant is THE SAME. Think about it. Car company A sells their own brand of coolant that is X color. Car company B sells another that is Y color, etc. The coolants are the same, but the color dye is different. They do this on purpose to control you and manipulate you into being freaked-out about other colors so that you will buy their over-priced coolant. It's a marketing gimmick designed to burrow deeper into your wallet like a blood-sucking parasite. Follow the money, and you will find the tricksters! Just use a HOAT coolant, and you will have exactly what you need. Why pay $37 for Toyota Red when you can get Beck/Arnley or Pentofrost A1 or some other brand for $25 or even less?? Check the MSDS and see for yourself. Concentrated is more economical, so that's what I get and mix with distilled water. Hope this helps!.