I have a First Generation 4-Runner, with a rebuilt motor, new raditor, etc. I know this is not a 80, but I like to think this happens to be the best place to ask this question. This rebuilt motor and raditor has green coolant in it, and the engine now has approx. 15K miles on it. Is there an advantage of changing over to the Toyota Red Coolant? The a.c. system is cold when driving at 2,000 rpms, but at idle it is not cold. Just wondering if the red coolant would help?
GM
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