Review on ACDelco GM Original Equipment 10-108 Cooling System Sealing 🔧 Tabs - 4g (Pack of 5): Optimal Cooling System Maintenance Solution by Antonio Bly

This is an OEM coolant sealant from GM. It's designed to take care of any GM coolant leak. On some models, it had to be used with every flush and coolant refill. I don't use directions. I usually use the entire package on every machine I work on. Never had a problem. Works as it should. I would try them on a GM car first before using more common sealants. This one won't clog anything you need.