Electric Coolant Heater

[Goran]

I discovered my new S8 has a Webasto heater, which I was going to remove due to my weight saving obsession.
However, then I started reading about usefulness of coolant (block?) heaters, especially making life easier for the engine on cold starts, and also considering our facelift D2's have those plastic cam chain tensioners so a warm start may be easier on them too.

So I decided to keep it until I found it doesnt work. I am considering fixing it, but in the meantime I was searching for a simpler device that doesn't use fuel.

This one from Germany looks good, and has a pump. There is a DEFA one with no pump and lower Watts, but I think I like this one.

Any thoughts?

http://www.ebay.co.uk/itm/Engine-Pre...-/350627775651

One bad review on Amazon:
"I got myself last year, the identical part of the Schwalm KG. The installation is pretty easy and after about 40 min of the 2.5 L diesel engine Spang almost without preheating ... but unfortunately those things are not very robust, have now the second wrecked - after only six months. Therefore, only two stars."