Review on Bar's Leaks PLT11 Pelletized Heavy Duty Radiator Stop Leak - 11 oz. by Adam Allard

My 2006 Explorer (4.6L) found a radiator leak at 102,000 miles so I decided to flush and add coolant and then add this. Driven about 250 km with it, no leaks yet. For $6 I highly recommend this stuff. I will update this review later if anything changes. EDIT (10/13/2013): Just wanted to say that after a year and another 18,000 miles it's still not leaking. I'm impressed to say the least. EDIT (2/22/2016): So my radiator started leaking again sometime last year (and ended up replacing it myself), but I think getting out of this stuff for 3 years was worth it.