Germany is in second place in this list, with a combined iron and steel import value of $31 billion USD in 2014. The reason behind such immense iron and steel imports by Germany is that of its top position for iron and steel products across the world as a supplier, notably including automobiles and heavy machinery among them.
Rather, the red light comes on when the oil PRESSURE drops too low as determined by an oil pressure switch installed on the engine. No VW van ever came from the factory with an oil pressure gauge or oil level indicator, just a low oil pressure warning light. One-switch system: 1948-1985.
Low pressure means there either isn't enough oil in the system or the oil pump isn't circulating enough oil to keep the critical bearing and friction surfaces lubricated. If the light comes on while at speed, do your best to pull off the road quickly, turn the engine off, and investigate the problem to avoid damage. Oil is the lifeblood of any engine, but the oil circuit is probably the least appreciatedÂ­ engine system.