A six-month evaluation of eleven APL diesel tractors by CEE found that Omstar DX1 (formerly D-1280X) reduced engine exhaust opacity by 33.5% and 50.3%, and generator set exhaust opacity by 51%.
A four-year, 4,000,000 mile/6,400,00 km test of 30 diesel-powered Los Angeles Airport Authority Shuttle Buses found that Omstar DX1 (formerly D-1280X) reduced exhaust opacity (smoke) by 87%.
CARB conducted 1500 mile tested on each of four diesel trucks used Omstar DX1 (formerly D-1280X), which resulted in an overall combined 36.6% reduction in hydrocarbon emissions, a 10.1% reduction in carbon dioxide emissions, and a 4.1% increase in fuel efficiency.
The Greater Dayton RTA (formerly the Miami Valley RTA) tested DX1 (formerly D-1280X) in 75 buses over 30 days and found a 53.6% average reduction in peak exhaust opacity.
A 70-day test of DX1 (formerly D-1280X) on Torrance Unified School District buses resulted in an overall smoke opacity reduction o f 52%.