One problem related to engine oil leaking has been reported for the 1999 Subaru Outback. The most recently reported issues are listed below.
Front crank seal fails. Causing oil leakage and possible fire under hood. Research on internet shows to be a common problem with Subarus. Research also shows Subaru has released 3 different parts in attempt to fix problem. Subaru denies this to be a fire hazard or even a problem with their vehicles.