Thanks CallMeVilla. I will check to see if the fins are protective or not & listen to the HandyGuys Podcast. Are you saying that if they are functional I should not paint them? I do believe they are functional. Here are the specs:
Outer Coil Net face area - sq. ft. (m2) 11.41 (1.06).
Inner Coil: N/A
Tube diameter - in. (mm) 5/16 (7.9)
No. of rows: 1
Fins per inch (m): 22 (866)
The unit is at least 9 years old. Everything is original except for the capacitors. I recent replaced the fan/motor capacitor after a technician had split the dual capacitor a few years back. So I am just trying to maintain it to get it through at least one more summer before I have to replace the whole system. I even recently got an EPA 608 certification so I could recharge it with R22 myself to save money. It works great. Temperature is at least 15 degrees colder than the air going into the returns.
I will physically check the fins later. It is too hot outside to work on it right now & I really don't want to shut off the A/C to check it.