Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams, Brown

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.

Excellent product.

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.

I have 4 Flathead powered vehicles with old radiators. I use this in all of them just to help with little pin hole leaks. This stuff works quickly and is good to have around if you have an old car or truck

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.

5

I have 2 problems with this product:#1 the directions say put one tablet in per gallon, which is WAY too much because it produces copious amounts of sediment in the system. Just 1 is sufficient.#2 Bars has umpteen products on the market in many forms for the every same same issue, which hardly engenders confidence in any of the products because common sense tells me that if any of them work at all, there is one form that works the best, which is obfuscated by the claims of each product.To sum up, I personally do not appreciate nor trust the obfuscative marketing strategy of this company regarding it's radiator leak stopping products.