Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sealed My Radiator Leak

My '06 Explorer (4.6L) developed a radiator leak at 102,000 miles, so I decided to flush and refill the coolant and then add this stuff. I've driven about 250 miles on it and so far there is absolutely no leak. For $6 I highly recommend this stuff. I'll update this review later if anything changes.