be added to all petrol. This type of additive is a detergent additive that acts as a cleansing agent in small passages in the carburetor or fuel injectors. This in turn serves to ensure a consistent air and fuel mixture that will contribute to better gas mileage. See also metering pumps Oil additive Greenwashing References ARRC Auto Repair Reference Center. Point 5 Technologies. Accessed via EbscoHost on November 27, 2009 EPA: List of Registered Gasoline Additives (Under 40 CFR Part 79) Petroleum products Chemistry-related lists