Recently I completed the installation of a GM Corvette LS3/480 HP V8 in my 2003 996 Porsche. Getting all the electrical to work has been my greatest challenge. One of those issues has been my water temperature gauge. It will work for 30 minutes, then it faults. No one seems to know why this happens… So I had to have a backup for my upcoming 4,000 mile car trip. I had the good fortune to find the “Engine Guard” digital temperature gauge while I was searching the internet. I purchased the two-sensor unit, one for water and the other for oil temp. Both sensors mounted easily with a hose clamp. What a small and mighty unit! I hid the head unit in my ashtray. It’s easy to read, has big numbers, and the alarm works as advertised. By monitoring the oil temp, I found that I had high oil temps in 90-degree (32degC) plus ambient. If I had not been monitoring the oil temp with the “Engine Guard” gauge, I could have gotten into some serious trouble and expensive repairs. Now I’ll add an oil cooler to hopefully remedy that problem during hard driving or high outside temperatures. Engine Guard is inexpensive, easy to install, and a precision instrument. I’m sure there are many other uses for this fine instrument.