So why can't we just buy the universal coolant that is out there. I mean, I know that some manufacturers say you must use there coolant because there have been problems with some coolants not mixing well together and gunking up and clogging the radiators. But there are a few new coolants that are sold TODAY that are suposed to be universal and SAFE FOR ALL other type of coolant already being used in your car. Are these not to be trusted? Other than the color being yellowish-green, they are not suposed to cause clogging problems like some older brands have done in the past. Sound true?
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