A trial was carried out at Londonderry under the control of NSW Mines Department between 11.10.78 and 15.10.78 in a Perkins D3.152 direct injection diesel engine. Exhaust gas checked by NSW Mines Department using Mobile gas chromatograph laboratory. Catalyst test data in brackets.

Significant reduction in exhaust gas pollutants, in particular hydrocarbon emissions. Also increase in power (1.3%) after catalyst added to fuel. Engine in as new condition and “conditioning period” limited. (Further improvements may have been possible with an extended conditioning period.)