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Bar's Leaks Block Seal Liquid Copper Intake and Radiator Stop Leak seals larger leaks. Repairs heater core leaks, freeze plug leaks, blown head gaskets and blocks.
| 15 of 16 people found the following review helpful This review is from: Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz. (Automotive) So you're gradually losing coolant from week to week and you don't know why? If you're like me you're discovering new things about your car every week(studying automotive technician and diyer). So you try to diagnose what the problem is. I tested the radiator and cap pressure(though I didn't check both seals of the radiator cap) in school. So I knew I couldn't be losing coolant there. And since I didn't check the other cap seal, I replaced the cap anyway. I also checked the water pump vanes because if coolant is leaking from the pump seal, it would show on the vanes. I got nothing. I suspected a blown head gasket, but the only symptom I could come up with was the loss of coolant. No excessive white smoke coming out of the exhaust, and no coolant smell in the exhaust smoke. No external leaks and no noticeable smell of coolant somewhere in the system.My first thought was ok now I'm screwed. It's either a hole in my cylinder or block. Or it could have been the freeze plugs,... Read more 3 of 3 people found the following review helpful By This review is from: Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz. (Automotive) Bottom Line: This stuff works incredibly. I tried 3 other well-known stop leak products, two different Prestone's and K-Seal and they failed. I had a head gasket leak in my 1995 Mitsubishi 3000GT, mint condition, but moderate coolant leak. All other coolant system components were almost new: radiator, radiator cap, upper and lower hoses and water pump. 1 Jug of coolant still leaked about every 3 weeks and made for a mess and strong toxic odor. Liquid Copper worked incredibly. The Liquid Aluminum may also work (I didnt try), but I would stick with the liquid copper as fixing any coolant leak you have. Poured it directly into the radiator which was about 80% full, drove 10 miles, topped off radiator 100%, and within 100 miles the leak was completely sealed, no leaking on ground, or in/around engine bay. Saved me well over $1,000.00. Thank you very much to Bar's for their superior products, and for saving my coolant system and vehicle from major costly repairs. 1 of 1 people found the following review helpful Amazon Verified Purchase( What's this?) This review is from: Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz. (Automotive) I found out I was loosing coolant as I had the dreaded "53" Cummins engine block in my 2001 Ram. I tried this because the options are few - replacement short block is $5000 or a $1000 drill and mash in block filler metal. To my very happy surprise the Bar's Leaks 1109 worked great and all I had to do was pour it in the rad leaving the antifreeze in there. Just make sure you remove enough coolant from the radiator to fit the whole bottle in the rad. DO NOT put any in the oveflow bottle as it will plug the siphon tube and you'll have to clean the canister out. |
The Blue Devil Engine and Cooling Sealant has the remarkable ability to repair and seal leaks in freeze plugs, leaking radiators and heater cores, cracked or warped heads and fix most blown head gasket by forming a permanently seal. The Blue Devil Engine and Cooling Sealant will also work on internal gasket leaks, where small amounts of coolant seep into the engine oil. Contains no solid or particulate matter. It is non-clogging and will not harm your engine. Bonds to metal, aluminum, cast, alloy or plastic. Is safe and easy to use. Works on cars, trucks, vans and SUV's with gasoline or diesel engines. Independent laboratory tests and confirm Blue Devil is the only sealer known to form a permanent seal and does not rely on particles, temporarily plugging leaks.
Bar's Leaks Liquid Radiator Stop Leak seals leaks. Conditions cooling system. Inhibits rust and corrosion. Lubricates water pump seals. Helps control electrolysis.
| 5 of 6 people found the following review helpful By "Bars Leaks" saved me an expensive towing bill and likely an expensive auto repair as well! Highly Recommended! Amazon Verified Purchase( What's this?) This review is from: Bar's Leaks C16 Liquid Radiator Stop Leak - 10 oz. (Automotive) Not sure if the three vehicles I tried it on were past help. This product is for radiators, not gaskets or block cracks. But the one that has a pinhole radiator leak was not fixed either. I would not buy this product again. Note: I followed the directions, but did not adjust for colder climates, the error may still have been mine. 0 of 3 people found the following review helpful By GAZ "GAZ" (usa) - See all my reviews Amazon Verified Purchase( What's this?) This review is from: Bar's Leaks C16 Liquid Radiator Stop Leak - 10 oz. (Automotive) Just simply Did Not Work...leak in radiator, used this and leak still continued....ended up buying a new radiator ....not happy with product |