-20 degrees about 15 years ago in my '75 300D. It took a few glow plug cycles and some cranking. But it finally got going. Used the block heater after that. Didn't care that the extension cord ran down 3 flights of stairs at my apartment.

My '80 240D started last week at 0 deg.

__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

12 Degrees. It took 3 tries and some prayers on 01/23/03. That is as cold as it has gotten here since I bought the car in Nov. 2001.

thebern

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1982 240D 313,000 (4 speed)
1984 300CD 172,483
1985 German Shepherd Dog -Lacey- R.I.P.11/04/05

Hood Stars, Wrist Crowns and Obsession Dobs

37F in Tallahassee this morning.

__________________
Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

My glow plugs were inoperative and it took about 30-40 seconds of cranking, but it started in 15 degrees. Now i'm plugging in at night and if the car is in the garage for an extended period.

__________________
www.jerseyplanning.com
1987 300TD 440K - My car
2005 Jeep Grand Cherokee Laredo 107K - Tim's car
2000 - CLK320 100K - Deb's car
1994 C230 150K - Josh's Car

no problem starts at -25c in my 1980 300sd.worst winter in a while here

The coldest I can remember was with my '77 240D, you know, serial glow plugs. It was 9 degrees Fahrenheit and lit off after the light went out. This was when the car was old, tired and using oil.

Just lucky I guess.

My $0,02,