Q. P.W. of Oak Park asked whether it was worth fixing a small leak in the car’s air conditioning system (Cars, July 10). You replied that for a 10-year-old car, it might be better to “just top ...

Some companies may also offer recycled R22 freon, but you should check with your technician for advice on how that may impact your air conditioner’s performance. 3.

Before we get to the Montreal Protocol or the ozone-depleting chlorofluorocarbons (CFCs) found in most auto air-conditioning systems or the lowdown on the new refrigerant that soon will replace ...

Instead of R-22, most modern air conditioners now use the refrigerant R-410A, which is environmentally safe. Car air conditioners use a different refrigerant and aren’t affected by the phase-out.