Mixing green and red coolant8/24/2023 ![]() Then I will try distilled water, wetter water and 20% coolant. I think I will put a thousand or so miles on it with the distilled water and wetter water, Then Flush, Flush, Flush - I will Flush with hot water. We have also had a Block Cleaner used when we took it in to have the Toyota thermostat installed. I hope that if this is the case (clogged due to sealer additive) that the multiple flushing and the use of the wetter water has dissolved it. Thinking back on this (Monte Carlo) it was actually the hardest engine overheating I ever diagnosed. In one case it ruined the radiator and the engine had to be disassembled to remove the hardened stop leak from the engine block cooling passages. Quote I have also seen a few cases where people have added multiple cans of radiator stop leak to a vehicle. Your final draining and refilling cleared up the restriction or possibly the Wetter water affected the clog. The sealer coagulated somewhere in the system and caused a blockage or restriction. GM stopped using this green-colored coolant in 1994, while Ford and Chrysler switched to a different type in 2001. Never mix green, blue, purple or pink coolants with the orange and red-orange coolants without converting the OAT/NOAT coolant to inorganic inhibitors. ![]() Previous owner had a radiator leak and used a sealer, which did not work so replaced radiator. You stated the Toy had a new radiator when purchased. The color of the antifreeze is simply a dye and has nothing to do with makeup of coolant.Ī guess from the shade tree mechanic peanut gallery. With several flush and fills your anti freeze has not been the same, the only thing that has been consistent has been the overheating. Now I wonder if this issue with the red and green coolant being used together may have been why I continued to overheat, or if the new Distilled Water and "Water Wetter" is really why I am now not overheating? Does anyone have experience that may lead to a conclusion? I got green coolant from the radiator and red coolant from the block. Not only did the red and green not mix, they stayed separate. Now we are going to check the most common ones and learn more about them. In the process of draining the coolant I discovered that there was still "Red Coolant" in the system. For example, green antifreeze, blue antifreeze, yellow antifreeze, red antifreeze, and more. After having the new radiator installed I took it for a test drive and it overheated worse than before the newer bigger radiator? I decided to drain the existing "Green Coolant" to try a product called "Water Wetter" by Red Line. When it was still overheating I took it to a Mechanic to have a larger Radiator installed, The mechanic came out and asked if it okay with me if they use Green Coolant, I said sure makes no difference to me. After having my Head Gaskets replaced at a Toyota Dealership my Winnie was returned to me with Red Coolant in the Radiator.
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