Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-20-2004, 05:54 AM
tomm9298's Avatar
Diesel and WVO ..
 
Join Date: Sep 2004
Location: South Carolina NO RUST
Posts: 502
Question How cold till you use the block heater ?

This is my first diesel, and I am not sure when to use my block heater. Fall starts this week with winter close behind.

Attached Images
 
__________________
1984 300D Turbo Sedan (Hilda) 272,115 miles.....
Anthracite Gray/Palamino Leather, I am 3rd owner

2001 Dodge Stratus (Silver) (wifes) 55814 miles...

1982 280TE Wagon Astral Silver Metallic/
Anthracite Velour
260,512 miles (Eva)

1969 230 Sedan Olive Green/Black MBTex
4 Speed Manual
84,213 miles ????
Haus Frau


2004 Boreem Ninja Pocket Bike
Highly Modified 49cc (Ling Ling)

Einigkeit und Recht und Freiheit
Reply With Quote
  #2  
Old 09-20-2004, 07:51 AM
Registered User
 
Join Date: May 2001
Location: Michigan
Posts: 1,373
My general rule of thumb is that I start using it when the car starts to struggle on start up. This may or may not ever happen for you based on where you live and where you store your car (garage or outside, etc). For me this is usually around the freezing mark (32 F).

I have a timer that goes off around 3 a.m. and heats my cars for about 3 hours til we leave around 6 a.m. Toasty warm with instant heat!

But my two girls are at college now and one of the cars is a bear to start in the winter. I believe that we will be idling it most of nov, dec and jan.

Don
__________________
DAILY DRIVERS:
'84 300DT 298k (Aubrey's)
'99.5 Jetta TDI IV 251k (Julie's)
'97 Jetta TDI 127k (Amber's)
'97 Jetta TDI 186k (Matt's)
'96 Passat TDI 237k (Don's
'84 300D 211k Mint (Arne- Undergoing Greasecar Conversion)

SOLD:
'82 240D 229k (Matt's - Converted-300DT w/ 4 speed
Reply With Quote
  #3  
Old 09-20-2004, 07:59 AM
mplafleur's Avatar
User Friendly
 
Join Date: Sep 2001
Location: Lathrup Village, Michigan
Posts: 2,939
I don't think I used my block heater until it got below 0 deg F.
__________________
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)

Reply With Quote
  #4  
Old 09-20-2004, 08:15 AM
Registered User
 
Join Date: Sep 2001
Location: central Texas
Posts: 17,281
If you use your block heater every day of the year it will last longer.... other things like rate of changing the oil, type of oil used being equal of course....
this is because most wear on an engine is caused by the difference in expansion rates of the pistons and rings compared to the bore.... so the closer those two are to operating temperature when you start up each time the less wear on the engine.
Reply With Quote
  #5  
Old 09-20-2004, 09:53 AM
jfikentscher's Avatar
Registered User
 
Join Date: Aug 2001
Location: Wall, New Jersey
Posts: 550
On the '87 I use it every day. That's because the glow plugs are shot. starts right up in any weather. Tried to take out plug#1 but it would not come out. Don't want to remove the intake and crossover if i don't have to. Any ideas on how to get the plug out???.
Thanks,
Joe
__________________
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
Reply With Quote
  #6  
Old 09-20-2004, 10:07 AM
Registered User
 
Join Date: Apr 2002
Location: RI
Posts: 1,040
I would put it on a timer and have it start up the block heater about 3 hours or so before the car's needed. I have been able to start my 83 as low as -10F without the heater but it really beats up the starter. Use the block heater as soon as you feel you need to wear a coat in the morning and give your starter a lot less work in the morning. If it's very very cold where you live, buy one of those jump start things and carry it in the trunk. I've had it save my butt when I had to work too late. Alternately and uncomfortably I go out and take the beast for a drive at lunch time.
Use that block heater, starter's a b***h to change.
Reply With Quote
  #7  
Old 09-20-2004, 11:10 AM
Registered User
 
Join Date: Apr 2004
Posts: 270
Quote:
Originally Posted by leathermang
If you use your block heater every day of the year it will last longer.... other things like rate of changing the oil, type of oil used being equal of course....
this is because most wear on an engine is caused by the difference in expansion rates of the pistons and rings compared to the bore.... so the closer those two are to operating temperature when you start up each time the less wear on the engine.
I have often wondered if block heaters are a major contributing factor in diesel longevity?

Since most diesels, and unlike gassers, and in the north predominate, diesel engines are plugged in during the coldest of cold nights and as you mentioned, less stress from a warmed engine, the engine will ware longer.

I too have not experienced a diesel before spring of this year, so it will be my first winter as well.

QUESTION: does anyone know what the wattage is on these block heaters?? I ran my block heater all last night to test to see if it works. This morning, I first turned the key to see if there was a reading on the temp guage and it read 50c. When I opened the hood, and placed my hand on the valve cover, it was so hot, I couldn't believe it! Just as though it had been running a few minutes ago!

So I wonder now what my electric bill will reflect to plug it in?? I could put a timer on it if I knew how long it takes to warm sufficiently, anybody know?

Also, and I will post this question on another thread too, Question: Why after having the block heater on all night, (the only thing I can think of) did my engine suddenly run as smooth and quiet, no subtle nailing at all!

Steve...............
Reply With Quote
  #8  
Old 09-20-2004, 11:32 AM
84300DT's Avatar
Senior Member
 
Join Date: Jan 2002
Location: Mass.
Posts: 2,219
previously i used the block heater at temps below 12 deg F. that number seems to be rising each winter...
will see what it becomes this year

3 hours of block heating does seem to be all it needs here.
__________________
1984 300D Turbo - 231k....totalled 11/30/07 RIP
Reply With Quote
  #9  
Old 09-20-2004, 12:06 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,318
Quote:
Originally Posted by jfikentscher
On the '87 I use it every day. That's because the glow plugs are shot. starts right up in any weather. Tried to take out plug#1 but it would not come out. Don't want to remove the intake and crossover if i don't have to. Any ideas on how to get the plug out???.
Thanks,
Joe

To remove the glowplugs on a 603 you have to remove the intake, it is not to bad you could probably do the whole job in a short day. Removing the intake also gives you the opertunity to clean all of the egr crap out and disable it.

This will be my first winter as well, it was 45 this morning when I fired up my car, it fired right off like it was 90 out. I will replace the block heater cord soon and see if it even works.
__________________
1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200
Reply With Quote
  #10  
Old 09-20-2004, 01:26 PM
Boston Benz's Avatar
Registered User
 
Join Date: Feb 2004
Location: Boston, MA
Posts: 289
block heater

I owned two Volvo diesels and would use the block heaters anytime it got below 40 degrees. That equals much less wear on the engine (oil's warm), MUCH less strain on the battery, and you get almost instant heat (coolant's warm). It's one of those things that you should use often if you have safe access to an outlet for electricity. I also noticed that my windshield NEVER frosted over in the winter when the block heater was plugged in, and snow would slide right off the hood/windshield too. I wouldn't be too concerned about when to use it (i.e. temperature) - just use it. No one will fault you for using it when it's cold. I can't say enough good things about block heaters. When my 760 got totalled in an accident it had 370,000 miles on it. I swear part of that was due to plugging in the car over the winters.
Reply With Quote
  #11  
Old 09-20-2004, 11:21 PM
Registered User
 
Join Date: Nov 2002
Location: Wakefield, RI
Posts: 2,145
I basically don't drive the MB in the winter but the work truck gets plugged in whenever the temp gets down to the high 20's at night. A cheap timer turns it on at 4:30am so its ready to go at 7:30. Sure it'll start on its own right down below zero but plugging it in lets it start easier and the heat comes on a whole lot sooner too. RT
__________________
When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K
Reply With Quote
  #12  
Old 09-21-2004, 07:10 AM
tomm9298's Avatar
Diesel and WVO ..
 
Join Date: Sep 2004
Location: South Carolina NO RUST
Posts: 502
Lightbulb Thanx

I appreciate all of the GREAT info. Has anyone ever "ohmed out" the heater. I would like to know for sure that it is good and not burned open. If you touch the block near the heater will it be warm to the touch??
__________________
1984 300D Turbo Sedan (Hilda) 272,115 miles.....
Anthracite Gray/Palamino Leather, I am 3rd owner

2001 Dodge Stratus (Silver) (wifes) 55814 miles...

1982 280TE Wagon Astral Silver Metallic/
Anthracite Velour
260,512 miles (Eva)

1969 230 Sedan Olive Green/Black MBTex
4 Speed Manual
84,213 miles ????
Haus Frau


2004 Boreem Ninja Pocket Bike
Highly Modified 49cc (Ling Ling)

Einigkeit und Recht und Freiheit
Reply With Quote
  #13  
Old 09-21-2004, 07:26 AM
Registered User
 
Join Date: Apr 2004
Posts: 270
Quote:
Originally Posted by tomm9298
I appreciate all of the GREAT info. Has anyone ever "ohmed out" the heater. I would like to know for sure that it is good and not burned open. If you touch the block near the heater will it be warm to the touch??

No, I haven't put a meter on it for resistance, don't know what wattage they are either?

Your entire engine should be hot! And based on my first trial yesterday, my temp guage read 50c before starting!

Steve.............
Reply With Quote
  #14  
Old 09-21-2004, 07:45 AM
BrierS's Avatar
Registered User
 
Join Date: Jul 2003
Location: Charlestown, NH
Posts: 1,008
Though I recently read a couple of threads on block heater wattage, etc. I do not remember what the numbers were. If you do a search on "block heaters" you'll find them. I do remember it wasn't enough to worry about on the electric bill. Additionally, from what I have read, the savings on wear-and-tear of the engine/starter plus less frustration with cold weather starting should more than offset the electrial cost.
__________________
Steve
'87 300TD - 132K - Soon 4-Sale
'84 300D Turbo - 122K - Driving
'77 VW Type II - 77K - Restored
'08 250EX Ninja
English Bulldog (Brier) - My best friend. Passed away 12/02/04 while in my arms.
Reply With Quote
  #15  
Old 09-21-2004, 07:55 AM
Registered User
 
Join Date: Apr 2004
Posts: 270
Quote:
Originally Posted by BrierS
Though I recently read a couple of threads on block heater wattage, etc. I do not remember what the numbers were. If you do a search on "block heaters" you'll find them. I do remember it wasn't enough to worry about on the electric bill. Additionally, from what I have read, the savings on wear-and-tear of the engine/starter plus less frustration with cold weather starting should more than offset the electrial cost.
Fully agree! And I understand now that it only takes 3 hours or so to get the temp up, so a timer is neccessary here!

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 06:52 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page