Review on Zerostart 3100040 Engine Block Heater: Ford, Lincoln, Mercury. CSA Approved, 120V, 600W by John Talcott

Works as advertised, needs to be about 30cm longer to fit on the front grille of my 2006 f250. Push out the block plug with a 5 gallon bucket to catch the liquid. Using a large screwdriver, insert into the top corner of the round block plug and tap with a hammer until it rotates and the liquid drains into the bucket. After that, pull out the plug with pliers and put the loosened heating element in the hole, press the plug with the tool with one hand, and tighten the bolt with the other, fixing the gasket in the cylinder block. Use gauze and filter out the old liquid for reuse. After testing at temperatures below 0 degrees for about two hours after plugging in, the engine block was heated to 83 degrees with a laser thermocouple, the ambient metal temperature was about 3 degrees Fahrenheit, so it heated the coolant and heated the engine block. I gave it 4 stars because I had to extend the fork to where I wanted it. UPDATE: JANUARY 2018 -24 BELOW ZERO, this heater block works fine. The truck starts with little effort, the stove warms up after about 5-7 minutes of operation. I did this last year in warm weather and now it's paying off. Take it. I also use a timer that turns it on and off regularly during the day/night. there is no point in wasting energy.