A fluid leak may develop from one or more power steering hose. When a leak is being repaired, it is not uncommon for multiple hoses to be replaced.Google+
Car Problem Reports
BMW 318i Multiple Power Steering Hoses May Simultaneously Fail
BMW 318i Problem
Average Mileage: 135,666 mi (100,000 mi - 190,000 mi)
Visitor, 1995 BMW 318i, 100,000 mi
In cold weather steering is very tight, power steering pump whines increasing with cold conditions.
Visitor, 1997 BMW 318i, 190,000 mi
I noticed excessive leaking with the PS hoses/clamps at the reservoir and the hose ends at the cooler hard line. I removed the OE "beverage system" type clamps and replaced them with regualar Fuel Injection line clamps to stop the seeping at the connection points.