Originally Posted by Mike1995
I would go with the inline heater core version. You spend less time on the ground and less coolant is lost. And if your handy dandy with electrical/wiring, you could rig your blower up so it will blow warm air into the inside of your car.
Problem with that approach is you don't get good circulation of warm water throughout the engine. Warm water (like warm air) rises, so you want to put the heater at the lowest point in the engine you can. If you put it low, the warm water rises and is replaced by the cold water. If you put it high, it just keeps warming the same water. The other advantage of a block heater is its simplicity. If you have ever installed (or seen) one, it is just a simple electrical element hooked up to a 120V power cord. Absolutely nothing to fail unless the element burns out, and that is not likely since it is immersed in coolant.
Does the inline version have a pump?
2001 Bonneville SSEi (retired at 365,000 Kms.)
2014 Jeep Grand Cherokee Overland (yes, I know its not a GM)