Quote:
Originally Posted by OM617YOTA
Lukewarm is about all you can hope for from the factory heater. 400w and a huge chunk of iron and low temps and moving air, that's doing pretty good.
Keep in mind the factory heater is a starting aid, not a comfort item. It's not supposed to heat the engine to operating temp, it's not supposed heat the cabin. It's meant to heat the engine enough to start, and the engine does not need to be warm to the touch for that. For that, it excels, and you can help with blankets over the hood, cardboard or whatever you have handy to block drafts, etc.
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The factory installed block heater is absolutley useless unless you live in death valley Ca. in the middle of summer with the car parked in a heated garage!
So stupid to have such a weak engine heater in a diesel engine as a starting aid. An open flame from a cigarette lighter held under the oil pan for two minutes would produce more heat!
The Kat's tank type heater is awesome, it cycles on and off between 130 and 170 degrees. The engine will start right up in sub zero weather with the touch of the key as if it had new glow plugs on a hot summer day!