Treasure Valley summers are no joke. Triple-digit days, long road trips to McCall or Twin Falls, and hours of stop-and-go traffic in the heat put real stress on your vehicle in ways that the mild spring months never do. And the worst time to find out your car wasn't ready is on the side of I-84 in 105-degree heat. A little proactive maintenance in early summer goes a long way. Here's what Blazek's team recommends checking before the temperature climbs and stays there. Air Con