Yet today, you do not require to do that! The idling you do on today's vehicle burns valuable energy and leaves energy residue on the cyndrical tube wall surfaces that adhere to it because the cylinders aren't moving as fast as they normally do. This contaminates the engine oil with carbon deposit and also makes your automobile's vital organs unclean.
If you actually require the automobile to keep running with the A/C on in summer seasons, keep offering revs to the car to ensure that the engine runs more as well as oil circulates inside the engine. Since India is a highly humid country, AC is always on, however attempt utilizing it much less commonly given that it places tension on the automobile components and you wish to lengthen the life of your car don't you?