You can take off the aluminum hose without ill effect - it's the airbox preheat hose, and you will find lots of information and differing opinion on this forum as to whether the system should be removed or repaired: do not worry about it.

The oil you show in your picture is normal b230f oiliness, probably minor blowby from the seals, the pan gasket, and any number of other sources. Just keep it topped up and monitor the oil levels - until it leaks more than a quart or two between oil changes, you probably don't have an actual problem, just typical leakiness.

Check your power steering fluid. The oil on the rack could be from the rack itself. Top up with ATF. Check your tranny fluid while you're at it - don't you already do all these things?