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 10-19-2004, 04:07 PM
*
 
Join Date: Nov 2003
Location: Tiki Island Texas
Posts: 1,049
Oops!! Ė Switched to syn

Oops!! Ė Switched to syn (Amsoil) and ran 12,000 mi. adding about Ĺ qt. Every 1,000 mi. Changed filters twice during this cycle. Used engine flush, and then, very briefly ran some thin dino through before adding the syn. I run on some pretty dusty roads and just like to change more frequently so Iíve switched back to Delo on a 3-5,000 cycle.
Over the weekend I did the valves, installed the fast GPís and put in rebuilt injectors (trying to beat what Iím told is a normal diesel rattle Ė that the nailing I thought I was hearing is supposedly much louder Ė still bothers me though as it only seems like itís in one cylinder) and found three cam lobes with rough little lines in them. Service records indicate the cam was replaced with the new hardened cam 45,000 mi. ago, but no mention of the lifters. I have to conclude that some gook got broken loose with the flush and syn, plugged an oil way to the cam (and who knows what else internally) and caused the wear. Even with the groves the cam is bright, and the settings hadnít changed over the year, but I donít feel to good about it. Car runs great, so I wonít do anything but check it again in 4-6,000 mi.
Anyway, something to consider when switching to syn.

__________________
89 300E
79 240D
72 Westy
63 Bug sunroof
85 Jeep CJ7
86 Chevy 6.2l diesel PU

"The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane."
Marcus Aurelius
Reply With Quote
  #2  
Old 10-19-2004, 04:16 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,307
What did the oil tests say? I am assuming you are running it in the 240D the older diesel engines put out a lot more soot then the newer ones. I would not run over 5k miles with getting a sample tested. If you ran 12k miles on the Amsoil without getting it sampled it is very possible you let the soot build up past the 2% limit.
__________________
2020 GMC Sierra Denali
2007 Tiara 3200
Reply With Quote
  #3  
Old 10-19-2004, 04:36 PM
*
 
Join Date: Nov 2003
Location: Tiki Island Texas
Posts: 1,049
Granted- another good reason to just change more often. These gruves had to come from no oil - for at least a short time - not just to much soot. My oil test is two fingers and a paper towel. To that issue - can you get a magnetic drain plug. It's been awhile - how do you magnetise something?
__________________
89 300E
79 240D
72 Westy
63 Bug sunroof
85 Jeep CJ7
86 Chevy 6.2l diesel PU

"The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane."
Marcus Aurelius
Reply With Quote
  #4  
Old 10-19-2004, 04:42 PM
Registered User
 
Join Date: Dec 2002
Location: RI shore
Posts: 2,937
Wrap the thing to be magnetized with an insulated wire, the more wraps, the stronger the magnetizing force, so don't use wire with fat insulation if you can avoid it. Then strip both ends of wire and briefly short circuit a car battery with it. Go ahead, try it first with a screwdriver, works pretty good, but I'm not sure how permanent it is. That depends on a lot of other factors
__________________
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.
Reply With Quote
  #5  
Old 10-19-2004, 06:26 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,307
You left syn oil in an old 616 for 12k miles without getting the soot load tested? No offense but you probably went over the limit, these engines usually hit the limit around 5k-7k. 12k miles is pushing it for a 603 and probably about right for a highway driven 606.

My 603 would be pushing the soot loading at 7k miles and I do a lot of highway driving. Not many short trips.
__________________
2020 GMC Sierra Denali
2007 Tiara 3200
Reply With Quote
  #6  
Old 10-20-2004, 01:09 PM
*
 
Join Date: Nov 2003
Location: Tiki Island Texas
Posts: 1,049
Well I am ashamed Ė I am going to get the oil tested a couple of times as I check the cam for wear. I did add 6 qts. over the 12m, so in a way thatís why I justified it. Actually I holed the pan about 2,000 mi. into the cycle, so it got a quick fresh change Ė you would not believe the roads I drive this car on, which is why Iíve got it. The pan was absolutely clean, and I was impressed. Guess it was clean because Iíd managed to move some of the gook back up into the engine with the flush or syn.
If this were just a soot issue I would think that the scouring would have been on all the lobes, but wasnít. Every time Iíve gotten a new (read older) car I go through this flush routine, but this is the first diesel. You always hear about breaking crude loose trying to clean up an old motor, but itís never happened to me before, and Iím only speculating that itís the cause of this. I did this on a w108, but it pumped so much oil (syn) through that I had to go back to my old friend Delo. Even though this is my first diesel, Iíve always used Dello or Rotilla in everything Iíve ever owned other than VWís and Porscheís. Iíve heard that Castrol wicks away heat better in an air-cooled. Maybe the urban myth deal.
Anyway this is just something to consider for those that are switching to syn in an older car Ė itís supposed to be great at breaking up all the crud.
__________________
89 300E
79 240D
72 Westy
63 Bug sunroof
85 Jeep CJ7
86 Chevy 6.2l diesel PU

"The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane."
Marcus Aurelius
Reply With Quote
  #7  
Old 10-20-2004, 01:15 PM
boneheaddoctor's Avatar
Senior Benz fanatic
 
Join Date: May 2004
Location: Hells half acre (Great Falls, Virginia)
Posts: 16,007
Quote:
Originally Posted by crash9
Granted- another good reason to just change more often. These gruves had to come from no oil - for at least a short time - not just to much soot. My oil test is two fingers and a paper towel. To that issue - can you get a magnetic drain plug. It's been awhile - how do you magnetise something?
Why magnetise it, clean it up real good (drain plug) epoxy a magnet a tad smaller than the flats of the plug. The magnet passes its magnetism through the steel bolt. Won't demagnatise. and of the magnet comes off its outside the motor.

This isn't my idea but one I read about on some site I don't remember.
__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
Reply With Quote
  #8  
Old 10-21-2004, 01:35 AM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 9,087
Thumbs up

Quote:
Originally Posted by Hatterasguy
You left syn oil in an old 616 for 12k miles without getting the soot load tested? No offense but you probably went over the limit, these engines usually hit the limit around 5k-7k. 12k miles is pushing it for a 603 and probably about right for a highway driven 606.

My 603 would be pushing the soot loading at 7k miles and I do a lot of highway driving. Not many short trips.


Can you elaborate on this soot load you speak of?
__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
Reply With Quote
  #9  
Old 10-21-2004, 12:22 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,307
I'm not sure what you mean? Soot is a byproduct of combustion, the way I understand it soot is made up of small abrasive particals. Different engines make more soot, the older diesels like the 616 and 617 for example make a lot more soot then say a 606 or a CDI. But every engine is different and driving habits and conditions affect soot loading. MB says don't go over 2%. If you want to extend your drain intervils get a sample tested at say 5k miles, the report will point out wear metals, additives, soot ect. This way you can tell how far you can extend your drain intervils.

__________________
2020 GMC Sierra Denali
2007 Tiara 3200
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 03:32 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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