Review Time
I purchased this product a week before Christmas due to my car pressurizing coolant into the overflow bottle and overheating from low coolant in the radiator. I managed to avoid boiling the coolant and carefully drove the car home. I followed all the application instructions as provided by the manufacturer and let the car idle for about 45 minutes. After a short drive, I noticed that the coolant was still pressurizing into the overflow bottle. I allowed the car to cool overnight and tried again the next day. There were visible copper particles in both the radiator and the overflow bottle, but unfortunately, it didn't resolve the issue. I had hoped to make it through the holiday season without needing to replace the head gasket. Unfortunately, this product didn't work for me.
The vehicle was initially struggling with power, stalling when cold, and performing poorly. Upon inspection, I noticed that the expansion bottle was producing numerous bubbles and coolant was escaping from the tank. I secured the hose, removed and emptied the expansion tank, then reattached it along with the hose. After adding a bottle of sealant and topping off the coolant, I started the engine. Within a minute, I felt a noticeable improvement in power, and the head gasket issue seemed resolved. No more bubbles or coolant loss; the car is running smoothly once again.
I was experiencing a lack of power in my vehicle, which would cut out when cold and run poorly. Upon inspection, I discovered that the expansion bottle was bubbling and coolant was escaping. I clamped the hose, emptied the expansion tank, reattached it, added K-Seal, and refilled the tank. After starting the car, I noticed an immediate improvement in power and no more coolant loss. The car is now running smoothly.
I want to express my gratitude for this product. During our move from one state to another, our radiator started leaking. It wasn't a major issue, but we needed a temporary fix to reach our new home. This product solved the problem, and we made it safely. Thank you for helping us during this important time.
My vehicle with high mileage had a blocked radiator causing overheating. After spending a lot on repairs, the problem persisted. I added K-Seal to the radiator and let it idle for a while. Now the temperature gauge seems stable, and I'm hopeful this will be a lasting fix. I'll provide an update after further testing.
K-Seal has truly saved me from a major headache. My heater core was leaking, causing my temperature gauge to rise quickly. After adding K-Seal to my coolant reservoir, I saw an immediate drop in temperature and all leaks stopped. My AC continues to work perfectly as well.
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K-Seal is the one-step permanent repair for all engine coolant leaks. It could save you thousands in garage fees! K-Seal will permanently repair coolant leaks in the head, head gasket, engine block, radiator, heater core, water pump casing and freeze plug. K-Seal is compatible with all types of anti freeze so there is no need to drain or flush the cooling system. Simply Shake, Pour & Go!
With over 12 million bottles sold worldwide K-Seal is the number one bestselling coolant leak repair in the USA and is the choice of leading international roadside recovery organisation to help keep their members on the road. K-Seal has been independently university tested in the United Kingdom to meet ASTM D3147, the coolant leak repair standard. K-Seal is available from all leading auto parts stores and online resellers.See more
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