Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: K&W NanoTechnology Head Gasket and Block Repair
Review: Without being to lengthy in words, I came home from having coffee and noticed my car running like it needed a tune up and in my rear view mirror I had noticed white smoke. Stepping out of the car and looking at the smoke I had observed antifreeze spraying on the ground. I checked my radiator and found it almost empty. I followed the instructions to the letter and my car dumped this product out of the tail pipe too. All I can say is it depends on how big you leaky gasket is. It didn't do what all the promises on the back said. If you ever noticed you're losing antifreeze somewhere and you checked everything, put it in before it get real bad or it won't work.
