Have you found
a puddle of oil inside the left front tire that looks
like it might stem from a power steering leak? Is
the leak more noticeable when it is cold? Since
the oil pressure is higher when the engine is cold (and
the oil leak may stop as the engine warms up and the oil
pressure drops slightly), it could be time to change the
gasket between the oil filter adapter and the engine block.
The part number for the improved gasket is F6AZ-6840-AA. It is about 1/8"
thick and fairly rigid. (There could also be a coolant leak, for as well as the two
oil passages there is also the coolant inlet
from the radiator.)