FWIW the O2 sensors will not last forever. It may not be a bad idea to replace them in the near future. They are easy to get to.
212,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
Engine Build - Click Here