I don't think so:
The Ethyl Corporation was initially founded as a joint venture between General Motors and DuPont with the sole purpose of manufacturing and marketing tetraethyl lead as a fuel additive. However, when the EPA began to phase out the use of leaded gasoline in 1972, new fuel additives were needed to boost the octane of gasoline. Initially marketed in 1958 as a smoke suppressant for gas turbines, it was not until 1974 that the compound was used commercially as a fuel additive in unleaded gasoline. The Clean Air Act of 1977 banned the use of MMT until the Ethyl Corporation could prove that the additive would not lead to failure of new car emissions-control systems. As a result of this ruling, the Ethyl Corporation began a legal battle with the EPA, claiming that MMT was harmless to automobiles. In 1995, the U.S. Court of Appeals ruled that the EPA had exceeded its authority and, as a result, MMT became a legal fuel additive in the United States.[2]
The health hazards associated with MMT use have been hotly debated for decades. Most recently, a 2003 study by the NICNAS in Australia suggested that MMT was highly toxic to humans, but ruled that the airborne concentrations of manganese as a result of car emissions from vehicles using fuel containing MMT were not high enough to cause a major health problem.[3] However, a 2002 study by Masashi Kitazawa argued that dermal absorption from accidental spills, use of gasoline as a solvent cleaner, and deliberate gasoline fume inhalation were the main sources of potential MMT exposure.
Due in part to fears remaining from the environmental disaster that was leaded gasoline and questionable effects of MMT on automobile engines, MMT use in the United States as a gasoline additive has been virtually non-existent.
