AOL Autos reviews fuel mileage enhancers, fuel system cleaners, engine oil additives, radiator stop leak, and transmission and engine oil stop leak commercial concoctions. Fuel mileage enhancers, according to EPA testing, simply don't work. Fuel system cleaners sold in cans are not strong enough to remove carbon build up. Engine oil additives add no additional lubrication or engine longevity. Radiator stop leak will only work in the short term until another leak starts and overuse can result in overheating and major engine damage. Transmission and engine oil stop leak temporarily swell rubber seals but quickly wear off and the leaks will return. If you have a problem we suggest that you seek professional repairs and not rely on the myriads of snake oil treatments available at your local auto supply store.
