Some interesting DI engine news
 

GM's info on "delayed start" with DI engines (due to temperature):

Extended Cold Crank with Direct Injected Engines

^Interesting.

And "check" this out:
Tire Cold Weather Cracking

I've never heard of such nonsense! SMH

Yes, tires are very sensitive to temperature. They carry the race tires in refrigerated trailers anymore to preserve the quality for races. In addition to cracking, tires turn brown when they start to age. Almost makes the use of tire shine necessary to keep them from drying out.

My mercedes 240d had a cold start procedure for extreme conditions. Pull out the cold start advance, twist the high idle knob all the way clockwise.Turn key and wait 20 second. Press accelerator to the floor and hold it and the starter for 30 seconds. If it didnt catch repeat. :eek:

They also recommended adding a few gallons of gas-o-line to the diesel tank too or use a blend of kerosene in the colder climates.

Driving an old diesel teaches you "just because you hear it fire, don't let go of the starter just yet"

I guess they need some glow plugs :p

I was concerned about cold starts with my Jetta, but it seems they've pretty well solved it. My coldest start was at -17F, and it fired right up with only one glow plug cycle.

Their starters are made to crank for a long time, though.

Nothings more frustrating than to have oil psi, see smoke from the rear end, but the engine wont catch. :eek:

Mines was toast and needed starter fluid to start in 85 degree weather. 475 thousand miles was the end of the road for it and I had replaced the glow plugs twice.