A Toyota Camry oil leak is leaning oil for a reason—poor, cheap parts. You have to be careful where you buy your parts from. Apparently, Toyota puts out a superior product. In this instance, a cheap seal goes bad after 20,000 miles. You can look at the seal and tell that it was shipped flawed from the factory. For good and honest mechanics, there’s nothing worse than having to stare down a flawed part. On the other hand, Toyota’s product comes packaged in the same shape that’s it’s to be used. There’s a difference, and it’s noticeable, not in the long run, but in the short run of things.
The best way to buy parts is to know in advance what you’re looking for. It’s not a bad idea to call a dealership in advance to find out your part’s legitimated number. Parts are unique to their destinations within a vehicle. Don’t settle for less. Do your homework.