Experts have warned that radiator sludge - a mixture of rust, dirt and limescale - can lead to higher energy bills and ...

The oil inside your car's engine can sludge up with neglect and infrequent oil changes. Sludge is a nasty contaminant that can destroy an engine if not given attention, but timely oil changes are a ...

On bitter cold mornings, few sounds are more disheartening than a radiator banging loudly, or worse, barely managing to make a quiet hum. Dragging yourself out of a warm bed to crank up the thermostat ...