Do exhaust insulating wraps work?
On One Hand: They Hold in HeatThe purpose of an insulating exhaust wrap is to hold in heat on the underbody of the car. Insulating wraps keep the heat in the exhaust, improving its performance and reducing moisture that leads to rust forming in the pipes.On the Other: They Shorten Engine LifeInsulating wraps have been shown to shorten optimal engine life. According to torquecars.com, exhaust wraps can lower an engine’s life of 20 years down to 17 years. However, the exhaust wraps prevent rust and other forms of damage in the interim.Bottom LineInsulating exhaust wraps do exactly what they’re designed to do–hold heat in the undercarriage and improve exhaust functioning.
