I have an older Subaru and not a common one. A 2006 Tribeca B-9 limited edition. It has 173K miles on it. Last year it started dropping a significant amount of oil which resulted in valve cover gasket replacement ($400) and this year another leak due from the drive shaft seal needing to be replaced ($220). I have worked on the car myself, replacing pulleys, tensioner, serpentine belts, alternator, brakes, things like that but I am not a skilled mechanic. I do these things because it is more affordable. I am now on a fixed income and it is leaking oil again. I thought it was from the oil pan but it just traveled there because my driveway is not level. Once I got it on level ground it is leaking somewhere from the front of the motor right above the front of the oil pan. I cannot afford a major fix. What do you all think about a stop leak oil additive? My feeling is that it is an older car and this might due the trick, I would never use it on a newer car. It is time for me to change the oil so I thought about trying it. Thanks in advance!