Tufoil Engine Treatment from Fluoramicsnow features a translucent stripe from top to bottom and a gauge with markings in mL and oz. of content level on the side of its bottles. The easy-view bottles allow users to quickly see how much Tufoil Engine Treatment is in the bottle and measure the amount used. Tufoil Engine Treatment is an oil additive engineered to provide performance enhancements to increase efficiency and make engines start easier, produce more horsepower, run cooler, and extend the life of the engine.