I just tried it for fun. Its 61 degrees F outside and mine did start but it did take a few seconds (5 sec or so) of cranking. There was also smoke out the back afterwards.
It was weird to hear that as long as a diesel can start, then it has enough compression. I dont know how true that is now, I just read it from previous posts.
Out of curiosity, in the compression test results, mine had 4.5 in #4 cylinder and 9.5-10.0 in the other 4 cylinders, whats the normal or compression numbers supposed to read for a new diesel engine?