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
  #16  
Old 07-21-2008, 08:39 PM
Palangi's Avatar
L' Résistance
 
Join Date: Dec 2000
Location: Republique de Banana
Posts: 3,496
Quote:
Originally Posted by ForcedInduction View Post
No, the oil should not be checked with the engine cold. It must be checked with the engine at full operating temperature and 10 minutes after it has been shut off to get an accurate reading.
Hey Forced

I have an 86 Isuzu diesel pickup. Sometimes when it hasn't been run in a few days, it will show zero oil on the dipstick (indicating more than 2.5 quarts low out of 6). It does this maybe 1/3 of the time. Warm it up and check it 10 minutes after shutdown and it is right on the mark.

I have learned how to adapt to this phenomonon, but, any idea where the oil is hiding?
__________________
Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE
Reply With Quote
  #17  
Old 07-21-2008, 08:45 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,274
that is weird... sitting cold... your level should be HIGHER, not lower... so strange.
__________________
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!
Reply With Quote
  #18  
Old 07-21-2008, 10:09 PM
Registered User
 
Join Date: Feb 2008
Location: DFW area (north side)
Posts: 1,288
I keep mine between the marks

Quote:
Originally Posted by ForcedInduction View Post
One quart is between the marks. You might find that you loose less oil if you maintain the level midway between the marks instead of right at the top notch.
When I do a oil and filter change, I used to add the amount indicated by the owners manual, run the engine pn a short trip day, let it set overnight, check it cold and it is right on the upper mark. I then see small drops of oil everytime I park until it has leaked down to midway between the marks. I've eliminated these oil leak spots by reducing the amount of oil I add at change time by 1/2 quart. I have no idea why this works but it does on my 617.
__________________
Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/mercedes-benz-cars-sale/296386-fs-1-owner-83-mb-300d-turbo-rebuild-parts.html
Reply With Quote
  #19  
Old 07-22-2008, 05:39 AM
ForcedInduction
Guest
 
Posts: n/a
Quote:
Originally Posted by vstech View Post
that is weird... sitting cold... your level should be HIGHER, not lower... so strange.
Other way around, hot oil expands.
Reply With Quote
  #20  
Old 07-22-2008, 05:50 AM
Cervan's Avatar
Crazy mechanic.
 
Join Date: Jan 2007
Location: olympia washington
Posts: 1,809
your both wrong, best way to know you have the exact ammount of oil your engine uses is to fill it to the exact ammount it can take. FSM calls for a certain ammount, fill it to that point exactly (including oil filter housing) should be right on the dot.
__________________
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.
Reply With Quote
  #21  
Old 07-22-2008, 05:52 AM
ForcedInduction
Guest
 
Posts: n/a
Wrong again. There is no way to know exactly how much oil is still suspended in the engine, clinging to surfaces and in the oil cooler. Filling to the exact amount will usually be slightly overfull.
Reply With Quote
  #22  
Old 07-22-2008, 05:59 AM
Cervan's Avatar
Crazy mechanic.
 
Join Date: Jan 2007
Location: olympia washington
Posts: 1,809
Quote:
Originally Posted by ForcedInduction View Post
Wrong again. There is no way to know exactly how much oil is still suspended in the engine, clinging to surfaces and in the oil cooler. Filling to the exact amount will usually be slightly overfull.
lol, i was joking just to throw something out there. You could get a digital dipstick that would accurately measure the level of the oil, the temperature of the oil and the viscosity and fill it to the exact ammount that way. theres some overkill lol. Hmmm...i just got an idea...
__________________
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.
Reply With Quote
  #23  
Old 07-22-2008, 06:07 AM
ForcedInduction
Guest
 
Posts: n/a
Ah, I see. haha
Reply With Quote
  #24  
Old 07-22-2008, 01:37 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,306
I have found with synthetic oil that you usualy need to wait a bit to get a good reading. It drains down so slow if you check it while say fueling up you will get a false low reading, by about 1/2 a quart on my car.

If you wait a few hours you'll find your engine makes oil.
__________________
2017 Chevy Silverado 1500 LTZ
2007 Tiara 3200

"No free man shall ever be debarred the use of arms. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."
-Thomas Jefferson
Reply With Quote
  #25  
Old 07-24-2008, 06:16 PM
Registered User
 
Join Date: Jan 2003
Location: Matthews, NC
Posts: 1,356
I found on my 500SEL that the oil does expand quite a bit. If I check it after a long hard run (say a tank of gas at 65 to 70 mph) and check it after about 10 min, it will show above full. Let it cool down over night and it will read maybe a quart less. My dip stick is 2 quarts between add and full. The other thing I found was that you need to insert the stick and wait 10 to 15 seconds before removing it to see the level. The reason for this is the dipstick tube goes all the way down to the oil pan. On the dipstick there is an o-ring to seal the dipstick when installed. These two things together make a kind of plunger that pushes the oil out of the tube. You must let it set for the few seconds to let the oil come back up into the tube. Try it sometime. Insert the dipstick and immediately pull it out. Check the level. Now insert it and let it stay in for 10 sec, remove it and check the level. You will find a big difference. I have never tried it on the 300D but I am sure the same thing will happen.
Paul
__________________
84 500 SEL (307,xxx miles)
Reply With Quote
  #26  
Old 07-24-2008, 07:19 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 33,980
Quote:
Originally Posted by ForcedInduction View Post
Wrong again. There is no way to know exactly how much oil is still suspended in the engine, clinging to surfaces and in the oil cooler. Filling to the exact amount will usually be slightly overfull.
Now see, I always thought that the MB engineers were probably smart enough to put the little notches in the right place.

Sometimes one has to be careful not to think too much!

Tom W
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #27  
Old 07-26-2008, 05:01 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by pmckechnie View Post
I found on my 500SEL that the oil does expand quite a bit. If I check it after a long hard run (say a tank of gas at 65 to 70 mph) and check it after about 10 min, it will show above full. Let it cool down over night and it will read maybe a quart less.
Something is happening other than simple expansion of the oil. If you were to heat 8 quarts of oil from 70F. to 220F., you'd have a hard time to measure the volume change without very specialized equipment. I'd guess the expansion at significantly less than 1 ounce. Gases expand quite a bit with temperature............liquids don't.
Reply With Quote
  #28  
Old 07-26-2008, 05:41 PM
Registered User
 
Join Date: Jan 2003
Location: Matthews, NC
Posts: 1,356
Brian, can you explain why a transmission will move up the stick quite a bit when hot. My engine oil may not change as much as a quart, but is a big difference between hot and cold.
Paul
__________________
84 500 SEL (307,xxx miles)
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 04:35 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page