Bar's Leaks Radiator Stop Leak Tablets

Works quickly and directions are simple. Used this in a few cars in the past - most recently a Jeep Grand Cherokee, and previously an old Nissan Altima. Both times the leak was sealed and it lasted until I no longer had the cars. This is the go-to brand for sealing leaks. Easy and way more affordable than a dealership.

I used this product to stop a coolant leak at the timing cover on a Chevy Trailblazer with 250K miles. It was buttoned up tight in an hour with no cooling system side effects. Worked great for me. Just follow the instructions. I did hear a rumor that this product was used to stop a leak in the reactor cooling system in the nuclear submarine Nautilus...so I figured if it was good enough for them, I'd try it in my car. I'm glad I did.

I had a lingering coolant leak that was getting bigger over time. My friend suggested these tablets since they are easy to use for someone who doesn't know about cooling systems. I drove the car around for about 30 minutes that the next morning my driveway was dry! I intend to use this every 15,000 miles or so to keep the leak at bay.

[This review was collected as part of a promotion.] I bought this last summer to seal a small timing cover leak on my brother's 93 Dakota 3.9l and with in 24 hrs it was not leaking anymore

[This review was collected as part of a promotion.] I bought Bar's Leaks Radiator stop leak to use on my 1981 Chevy C-10 pickup, not a major leak, but I use the truck for car shows and by golly, it worked like a champ and no more leaks! I've been using Bar's leaks products for at least the last 40 years, and glad they are still around with their awesome products!

Good product. Thanks

I have used this on multiple occasions and it is the best stop leak out there. I used it for a leaking head gasket and for a leaking water pump. Both times I was a long way from home and this patched things up so I could get home and get them fixed.

followed instructions. two allpications spread a week apart. older van pinhole leak radiator. didnt work. still a drip wetspot after a couple of weeks. crushed tablets. driven several times. three crushed tabs then after a week two crushed tabs. 15min ran to heat engine.

My overall satisfaction was very disappointing. Quality well four out of five packages were broken open and scattered throughout the shipping box price more expensive than the auto parts store.

Came open and covered in dust.