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Old 02-09-2014, 01:49 PM
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Join Date: Feb 2013
Posts: 209
Cold weather starting idea

If you are trying to start an W123 in cold weather where you can't plug it in or whatever, would filling the big spin on fuel filter with something like the white Power Service cetane boost stuff be a help, or do you run the risk of damaging something since it's intended to be used diluted with diesel fuel.

Also I owe whunter some pictures!

1978 300D
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Old 02-09-2014, 03:00 PM
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Formerly of Car Hell
Join Date: Mar 2008
Location: Buffalo NY
Posts: 2,054
Last cold snap (well, it's not over). My current 616 doesn't like to start in the cold at all. Village didn't like it parked in the yard so I used the small (maybe 9" x 18" x 4" deep) propane grille got for father's day or my birthday. Used a large cookie sheet to prevent disaster by ensuring any flammable drippings would stay away from the flames. Back an hour later, peachy keen. Man that propane bottle was cold.

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times
It's hard to
more likely to
concentrate on
have an accident
two things
when you're on
at the same time.
a cell phone. It's not like there's anything wrong with feeling good, is there?
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Old 02-09-2014, 03:19 PM
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Join Date: Aug 2011
Location: Carolina
Posts: 1,500
Running as much as a filter full of straight PowerService will do no harm.
Current fleet
2006 E320 CDI
1992 300D "IceBerg"
1984 300D "Blues Mobile"

1978 300CD "El Toro" Gone on to be born again
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Old 02-10-2014, 12:56 AM
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Join Date: Dec 2002
Location: Annapolis,Md
Posts: 442
Use Power Service to fill new fuel filter when changing filter. Better than dirty diesel fuel and should help clean fuel injectors. No problems in 25+ years.
Paul 1987 300 SDL; 2000 ML; '69 MGB; '68 VW Fastback
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Old 02-10-2014, 08:19 AM
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Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,518
I would not touch a filter on a car I'm trying to start in fridgid temps... air could creep into the problem... perhaps when you are shutting it down, and it's still warm, you could do it, then purge the air well, but if you start it, the filter will dilute VERY QUICKLY...
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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Old 02-10-2014, 03:50 PM
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Join Date: Feb 2009
Posts: 67
Cycle the glow plugs 3 times before using the starter!
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Old 02-10-2014, 03:54 PM
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Rogue T Intolerant!!!
Join Date: May 2004
Location: Sunnyvale, Texas (DFW)
Posts: 9,675
Buy a car that will start in cold weather!! Seems simple enough......

Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
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