This will involve, in many cases, an increase of maintenance costs. ... on experimental vehicles, no one has yet been able to do this for 50, 000 miles, catalyst durability being a critical problem. ... than the vehicle without a catalyst and EGR, because of the richer carburetor setting required by the emission- control system.
|Author||:||National Academy of Sciences (U.S.). Committee on Motor Vehicle Emissions|
|Publisher||:||National Academies - 1972|