1993 940 with 230K miles. R134A AC system. I recently hit a small dear and punctured the condenser, discharging the AC system for the first time. Only in the last couple of years have I had to add any refrigerant to the system, so the system didn't have any major leaks before the incident with the dear. I've purchased a new condenser and o-rings. Before I finish replacing the condenser and having the system purged and recharged, should I replace any of the other system o-rings or components as a preventative measure, or is that more apt to create more problems later? Also, nothing came out of the condenser when I removed it, so should I add any oil to the system before having it recharged? Thank You.