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I would stick to Toyota Red or go 100% for the Toyota Pink (which is a mix of water and coolant). I also dump in a bottle of WaterWetter as you mentioned
ok cause I have regular coolent mixed right now as well and it thought it would be better to stick to one kind of coolent. I live cali and its hot as F*** these last few days.
The Toyota red coolant is the best. It's less acidic/corrosive than the green. I noticed a lot of people who had their heater core go bad were using green coolant.
Toyota sells pre mixed and concentrated which you will need to add water. Make sure to use distilled water to keep mineral build up out of your cooling system.
Coolent recomendations
