A few months ago I thought about the fact it had been a long time since I cleaned the dust off the coils (or whatever they're called) in the area below our side-by-side fridge. So I pulled that cover off and it was solid dust and dog hair.
Got it all cleaned out, then started checking temps inside fridge and freezer. After a bit of adjusting the knobs inside the fridge and checking, the temps went to where they need to be and stayed there.
Lately, we noticed that the face of that divider between the two compartments is fairly warm... along with the rubber seals that close up against it. There's even a "warm rubber" smell at times.
All temps are spot on. Is this a concern or is that normal? Fridge (GE) is probably about 20 years old.