As of January, a new unleaded gasoline will be sold in the DR for the same price as leaded gasoline. The new gasoline will be of less quality than the unleaded gasoline available in Dominican gas stations. A Shell spokesman say that some 10 year old cars may experience problems when changing from leaded to unleaded gasoline. The leaded gasoline will not be sold after January. The new gasoline is considered better for the life span of vehicles, their maintenance, and will reduce vehicle contamination of the environment.