TOP TIER™ Gasoline and Diesel The Cleaner, Greener Fuel
Since the minimum additive performance standards were first established by the EPA in 1995, most gasoline marketers have actually reduced the concentration level of detergent additive in their gasoline by up to 50%. As a result, the ability of a vehicle to maintain stringent Tier 2 emission standards has been hampered, leading to engine deposits that can have a big impact on in-use emissions and driver satisfaction.
Nine top automakers have raised the bar. TOP TIER™ Detergent Gasoline helps drivers avoid lower quality gasoline which can leave deposits on critical engine parts, reducing engine performance. That's something drivers and automakers can get behind.