Oxygenated petrol, although it reduces pollution, causes frequent stalling in poorly maintained automobiles
However, in laboratory tests of automobiles that had been driven 100, 000 kilometers, those that had regularly used oxygenated petrol stalled less than those that had regularly used nonoxygenated petrol
Drivers whose automobiles regularly exhibit adverse effects from oxygenated petrol generally cease to notice the adverse effects by the time their automobiles have been driven 100, 000 kilometers.