Vehicle in question is a 2013 1.8L Cruze LS WITH 70,000 MilesThe vehicle had the stock spark plugs and they were changed toAUTOLITE XP3923(sp?) from Advance Auto Parts. Gapped to .25The car seemed fine at first, but after long periods of idling, the engine will start to hestitate and sometimes stall. The car runs perfect for short trips.I think the right thing to do is replace with stock spark plugs, I just wanted insight on this.Anyone else had problems with AUTOLITE ? Is the stock spark plug gap on a 1.8L engine .25?