I use the block heater frequently. It started at 7 no problem, but I get heat quicker in the morning. Can't wait for the -6 F expected on Sunday. :rolleyes:

Ya, I haven't used the block heater all winter......... Coldest I've had the opportunity to start at was 15F. Glowed her for about 30 seconds, cranked and she hit on the second revolution. A little throttle for about a minute, and she sat their and idled for warm-up about 15 minutes and I was off......

CDI starts a little different
 

We had our new 2006 CDI up in Yosemite, starting up first thing in the morning, the ambient temperature was about 27 F, she started just as fast as she does when it is in the 50s/60s outside (1 second glow). One odd thing though the way she starts is that she turns over once before firing (kind of like a gasser) which is unlike my 87 TD which fires on the very first crank. I wonder if this is normal for a CDI? Could it be because the newer CDIs have lower compression than the older designs?

I dont know how but my 2006 starts for me down to 15 so far first time every time, no hesitation. My 06 dodge ram on the other hand starts and runs ratty for about 30 seconds then smoothes out on high idle (1000 rpm) till yor ready to go