ACDelco Front Radiator Sealer 10-108 Black Metal 24CTN

These just WORK! There isn’t any more I can say other than they do exactly what they say they do. Don’t waste your time with the other ‘snake oil’ products. Get these, follow the instructions and you’ll be glad you did.

Best coolant sealant it helps me stop losing coolant and also stopped white smoke which I notice morning startup my civic 2001 thanks acdelco

fast delivery great price. I was doubtful about this product, well i was wrong. I put 4 of the 5 tabs in the coolant reservoir and it worked instantly. It is not a permanent fix but it was still working three weeks later when i got the new radiator. I might buy another pack to keep in the car in case of an emergency.

I understand this might not work in every cade, but they were magic for my 2005 Tahoe. 3 years and didn't lose a drop of antifreeze after one dose. My truck has a known issue with a porous cylinder head. The truck either dies with antifreeze in the oil, or this little magic bullet does its work. Luckily, 4 years later, my truck is still in good health. Woot!

repairs to cooling system