In Australia from January 2011, all new heavy vehicles using diesel engines, needed to limit the exhaust emissions of harmful pollutants like Nitrogen oxides(N x).

These diesel vehicles have been fitted with Diesel Exhaust (DEF) systems to limit the pollution coming from their exhaust. The most popular system uses DEF or diesel exhaust fluid. Diesel exhaust fluid (from a separate DEF tank situated usually next to the diesel tank on the vehicle) is injected into the vehicles exhaust pipeline, the aqueous urea vaporizes and decomposes to form carbon dioxide and ammonia.

Selective catalytic reduction (SCR) is used to reduce the amount of NOx released into the atmosphere Within the Selective Catalytic reduction catalyst, the NOx are catalytically reduced by the ammonia (NH3) into water (H2O) and nitrogen (N2), which are both harmless; and these are then released through the exhaust.

Optiblue produces Diesel Exhaust Fluid (DEF) for the Australian Market, this fluid is a clear non-hazardous liquid.  It is not a fuel, nor a fuel additive and needs to be filled into a dedicated Diesel Exhaust Fluid (DEF) tank which is on your diesel vehicle. It is replenished in a similar way to refuelling diesel.

Optiblue is a South Australian based company servicing Australia with AUS32 fluid for all diesel engines that utilise Selective Catalytic Reduction (SCR) technology. Its DEF is non-toxic aquaria’s urea solution guaranteed to meet quality standards of DIN70070 and ISO 22241-1 as to comply with manufacturer’s warrantee.