Car: 2004 Mazda6 V6 auto with 220,000 miles on it. Yesterday, in rush hour traffic on the highway, saw a puff of white smoke from under the hood. Tried to get over to the right- by the time I got over, I’d passed the last exist before the Baltimore Harbor Tunnel.so had to keep driving till I could find a safe spot to pull over. Temperature gauge spiked, so I turned on the heat, on full- and got cold air coming out. Temp gauge then dropped to cold, and all dashboard warning lights lit up. Small antifreeze puddle under car…had it towed home. Truck driver was able to get it started long enough to roll it off the truck into parking area.
Any thoughts? Any idea how badly I damaged engine by continuing to drive the 2 miles through tunnel?