Review on Bar's Leaks HG-1-4PK: Head Seal Blown Head Gasket Repair 🔧 - 33.8 oz (4 Pack) - Ultimate Fix for Head Gasket Issues! by Andy Mitts

Now, like everyone watching this material, you're wondering if it will solve your problem. I have some ethical issues with using it to fix a car just to sell it as I think it's ethical to sell a car without disclosing that this stuff is in the coolant. As for me, I had what I thought. There was a fairly small head gasket leak that allowed gases to enter the coolant, eventually causing the coolant to overflow. It will happen after the car has warmed up for 15-30 minutes, especially if you drive hard. I followed the directions and thought it worked for a while, but with a longer drive the car went back to its old ways. Luckily I sold the car to a mechanic with full disclosure of the problem. He was going to remove the head and fix it, but now all this junk is in the coolant, radiator and heater core. Probably not good for all these items. You should be aware that this stuff is REALLY thick and it took a while to work on the system. Despite all the hype, I cannot recommend this material. Excuse me.