Here’s John Paul, writing for Boston.com, answering a reader’s question about his leaking 2000 Mitsubishi Montero:
Q. I have a 2000 Mitsubishi Montero with 3.0L V-6 and over 180,000 miles on it, and recently had oil smoke and oil leaks. The estimate for repairs was more than the value of the vehicle, so after a little research I used a “Stop-Leak” product from Bars, and for $20 solved everything. Do you think this fix will last?
A. At twenty dollars, you had practically nothing to lose. These types of additives cause the seals in the engine to swell, stopping the oil. The additive most likely fixed the oil smoke by restoring the valve guide seals and the external leaks by swelling the camshaft seals and other gaskets. At some point, the seals will fail and an actual repair will be necessary. I have used this product and seen thousands of miles before repairs were necessary. Good luck!
Emphasis ours, but it’s awesome to see a major online news souce like Boston.com scoop our products.