For instance, say the car is parked at a pretty steep angle, can coolant leak?

Or if there is any coolant leaking at anytime then something is not right? Such as faulty water pump, hose wear, or radiator hole?

Thanks.

 

I never really park on steep hills personally, but I don't believe it should.

 

no it is not supposed to leak something maybe wrong i would start checking the whole cooling system

 

it is probaly a bad o-ring around your water pump. whole 6 bucks for the honda one. if this is infact your problem and you pinpoint itand have the funds, might as well make this a good time to do a timing belt, tensioner, water pump, thermostat replacement.

 

could be a number of things, its just best to locate where the leak is coming from first before tearing the cooling system apart.