In nearly all cases where imported fuel conductivity has increased dramatically the product has been transferred
from one point in the supply chain to another via pipelines several kilometres in length. This indicates that some
subtle undefined chemistry is at play in the fuel, which influences Stadis 450 and conductivity behaviour. In these
supply chains it can become relatively predictable that passage through pipelines can result in slight to significant
increases in conductivity when poor dose response to Stadis 450 has been observed. Experience in some supply
chains has shown that any imported fuel exhibiting a slight colour change, and perhaps also an increase in total
acidity, will exhibit this behaviour to a greater or lesser extent.