Here’s what others say about Temp-A-Start... 

Temp-A-Start is the best solution. Here are some of the benefits...Saves gas - up to .5 mpg,  Saves the
engine - Engine life is extended by about 20%,  Cuts down idle time- dropped by over 40%.  Promotes a cleaner world–less pollutants emitted with less engine run time. 
– Alan Laible, Cox Transfer, Inc.

Temp-A-Start might be the secret to 750,000 mile engines. In 1987 we bought a bunch of Freightliners. All of them, except the 3 outfitted with Temp-A-Start, have had valve jobs.  The Temp-A-Start ones are still going!
– Steve Myrkle

Temp-A-Start saves me money everyday. There is no comparison. The installed cost of Temp-A-Start is less than 25% of the costs of an APU.  Maintenance costs for the two systems are dramatically different.  Not only is Temp-A-Start a lot less expensive to own and maintain, it does an equally good job of keeping me and my truck comfortable while reducing my idle time.
– Anonymous