Bar's Leaks HDC-12PK Radiator Stop Leak Tablet - 2.1 oz., (Pack of 12)

Replaced the water pump on my Ford Taurus recently. I didn't do a nice job in scraping off the old gasket. So there was minor coolant leakage after the new water pump was installed. I can see the coolant dripping off the exhaust pipe right under the water pump after over-night parking. The leakage is not very much and not critical however it's very annoying. To re-do the water pump work, I'll have to remove the drive belt, tension pulleys, steel wheel power pumps, ..., and so on. I'm tired of these. So I give this Stop Leak a try. Instead of dumping the pills into the radiator, I simply dropped them into the coolant reservoir (container). To my surprise, it works! I don't have leakage on my new water pump any more. For $2.50, it really worth the money. It saves my day.

I had to change head on my boat’s diesel CAT3208. Did not have any problems with the gasket, but head needed to be replaced. However, after the change I noticed small leak around the head gasket. Initially I purchased Bar’s Head Fix, but decided to call the company to get some tips on the installation. The company’s rep, after listening to the nature of my problem, stirred me towards Bar’s tablets. I followed the instructions on the amount, pre diluted tablets, and so far no leak. Just took a 50 mi trip down the coast everything looks good. I was little anxious initially, my engine is 40 years old and I did not properly flushed it, just changed coolant during head replacement procedure. I don’t know how long it is going to last, so far definitely worth it.

My radiator developed a slow but significant leak after I clumsily bumped my Nissan Pathfinder SUV into a reinforced cinder block wall at low speed in a parking garage. I have ordered a replacement, but needed to patch my old radiator well enough to get me through to the next weekend when I will have time to do the swap. The label says the tablets will fit in "most" radiators intact - That may be true for full-size American cars and pickups, but not for any Japanese vehicle I've owned. Following the instructions, I dissolved all six tablets in hot water, poured the resulting slurry into the radiator. I topped off with deionized water and started driving around - First to an auto parts store to get a new radiator cap, coolant, and sealant to prepare for next weekend's projects. After three trips of a few miles each, the leak had attenuated noticeably. I drove out for dinner, and when I arrived at the restaurant there was no noticeable fluid leaking. I checked the radiator this morning, and found it completely full. There was no sign of any leak then or after my Monday morning commute. I've used other leak-stop products before, and I have to say this one appears to be the most effective. I wouldn't trust anything other than a fully sound radiator as a permanent fix, but I am cautiously confident that the Bar's Leaks treatment will get me to Saturday morning without further intervention.

These are awesome!!

All anyone needs to know is IT WORKS. As long as the leak isn't a gaping hole. And it did not clog my heater core.

Bought this to seal a pin size hole. I went to use it stated to insert into the filler per the directions. The pellets are very large and just fit in the filler opening. I only got 5 in. Ran for 10/15 minuets. Well the wife went to work the next day and on her way home the upper hose blew off. After I got there and started looking at it I found the pellets had just stayed in the filler neck. I needed to use a screwdriver to open a hole so I could fill it up. I guess if I had to do it again I would use a liquid.

It actually works on a water pump leak. Toyota Sienna .Surprisingly effective. Alot of water dripping then nothing. Im very relieved. I pounded the tablets, 2 of them in a pestle and mortar.Then mixed with some coolant, the poured into the radiator spout. Hasnt leaked since and we are months down the road. Cant really fault the stuff. Got it in Walmart. I phoned the company and spoke to the chief product advisor/developer/tech and asked which product he liked for my water pump leak.Thats what he recommended.

These clog up the coolant reservoir and make coolant brown and thick, use the liquid type instead

Function fragments! Utilise 2 tablets !

Muy bueno, detuvo la fuga que con otro producto no había resuelto

Clogs the water pump

I had minor coolant leak there would cost over a thousand to repair and I read that GM uses a product like this for small leaks. I added the tablets to my coolant and leak gone.

Deller what great 👍