Review on Zerostart 3400032 Silicone Reservoir Hydraulic by Damon Fields

I have been using these heaters in my cars for many years. They seem to be working fine. The only downside, IMHO at least, is that no one ever knows if the pad is actually "on" when plugged in. This means the pads are failing and there's really no way of knowing when and if they have failed. One day I got curious and put my finger on the pad - not hot, not warm - broke - who knows how long. (installed correctly by the way). I have installed brake pads on all three of my family's cars. I find the pads give me some peace of mind when starting the car on a cold morning. I try to be kind to my cars.