I had a small leak in my radiator so I tried this product. It seemed to reduce, but not stop the leak for a day or two, but then the leak got much worse so I had to take my car to the shop to get the radiator replaced. The mechanic was not too happy that this stuff came out with the coolant.

I initially purchased the book assuming that it was require by one class professor. Instead the same book is being used in advance finance by different professor. The price was worth it to take both class with the same book. Again, the price was inexpensive compare to other competitors.