Excavation work at a Keystone Pipeline oil spill has been delayed because crews must clean up sludge around the site, ...

Keep in mind that you may need to treat the engine with additives, drain, and refill it with clean oil multiple times to clear out all the sludge. If you don't detect your engine sludge problem ...

The finding could lead to the creation of a system that includes bacteria as a means for cleaning sewer water around the world. More information: Guofang Xu et al, Harnessing Sewage Sludge ...

or marked mineral oil, to make it colourless. When the fuel is devoid of the marker, however, the residue is a damaging toxic sludge that is often dumped by the roadside for councils to clean up ...

or marked mineral oil, to make it colourless. When the fuel is ‘cleaned’ however, it leaves behind a damaging toxic sludge that is often simply dumped by the roadside for councils to clean up ...