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Your cart is empty.Only use the best for your car when you use Bardahl! Our NoSmoke Motor Oil Additive is an essential for older cars. As engines age and experience wear the tolerances between the moving parts inside loosen and oil can get past your valves and piston rings and into the combustion chamber creating smoke, pollutants in your exhaust, and even harming your engine over time! No Smoke is an extremely effective friction reducer that uses a special extra-thick formula to fill-in the spaces created between moving parts inside an engine and reduce or eliminate smoke from burning oil and in turn reduce or eliminate pollutants in your exhaust. The anti-friction design not only helps eliminate the symptoms of wear in older engines, it can help reduce further wear by improving the performance of your car's engine. Beyond that it can even quiet noisy lifters and decrease engine noise while helping to improve compression over time. Our concentrated formula means that one 16 fl oz bottle of additive is all the treatment you need for up to 6 quarts (5.7 liters) of motor oil. All you need to do is shake the bottle well, and pour the contents into a warm crankcase after the oil and oil filter has been changed. At Bardahl we've been creating the best additives in America from our headquarters in Seattle, Washington for over 85 years. We've made our name a trusted source for mechanics, car enthusiasts, and in the world of motorsports with our constant commitment to quality and innovation.