Preventing Car Overheating in North Indian Summers: Coolant & Radiator Care

1. Why Do Cars Overheat So Often in Delhi NCR Summers?

During peak May-June heatwaves in Delhi, Noida, and Gurugram, ambient temperatures frequently exceed 45°C. Combined with stop-and-go bumper-to-bumper AC usage, vehicle cooling systems face maximum thermal stress.

2. The Three Most Common Causes of Overheating

• Coolant Leakage / Old Degraded Coolant: Coolant loses anti-boiling properties over time. Leaks typically develop around brittle radiator hoses, water pumps, or heater cores.
• Radiator Fan Motor Failure: In slow traffic, the radiator fan must pull air through the cooling fins. If the fan relay or motor fails, temperature spikes within 3 minutes.
• Clogged Radiator Fins: Dust, smog residue, and insects clog condenser and radiator fins, choking airflow.

3. What Should I Do If My Car Overheats on the Road?

1. Immediately turn OFF the AC and turn ON the heater to high — this uses the heater core as a secondary radiator to dump engine heat.
2. Pull over safely and turn off the engine.
3. NEVER attempt to unscrew the radiator pressure cap while the engine is hot; boiling coolant will spray under high pressure, causing severe third-degree burns.
4. Call Instant Mechanic at +91 9266961110 for doorstep coolant flushing, leak inspection, and fan motor repair.