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Well it didn't make into the low 20's, but it was 28 at 6:30 this morning when I started it up. I didn't even crank it yesterday. I have started this truck as low as 16 degrees and it does the same way, no smoking, no rough idling, no coughing or farting around. It cranks right up with no...

Yes, I agree, and whenever they start giving trouble, I aways put in a push button too. Mine is working fine right now, so I haven't done anything to it yet. The block heater makes it where you don't have to use the GP's after the initial start, though. With the block heater, they crank running...

Ditto. And the 6.2 would never crank with a grid heater alone. They would have to used in conjunction with the glowplugs. It would be pointless IMO.

The thing I would have against a grid heater in an IDI engine like a 6.2 is the ambient heat of the engine. 6.2's run hotter than Cummins or Powerstrokes, and that grid will absorb a lot of the ambient heat and will have an adverse effect on power. N/A diesels suffer from this WAY more than...