Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 07-09-2001, 08:34 AM
Posts: n/a
I have just purchased a 1999 E300 TD (~ 39,000 miles)and noticed that the oil, which was just changed by the MB dealer, was jet black. Is this normal for a diesel engine and is there a special type of engine oil required for diesels?
Reply With Quote
Old 07-09-2001, 10:12 AM
Registered User
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,476
Yes and yes.

It's normal for the engine oil in a diesel to turn jet black five minutes after it's changed. I've had three MB diesels and they've all done this. I don't think this has much negative effect on engine life, but I only kept the first one until 250K miles The other two are still "new."

Your OM606 diesel engine does have some special requirements for engine oil. There are two aspects: 1) The oil must carry a CH-4 or CG-4 rating. This is a diesel specific rating somewhat like the SH/SJ ratings which apply to gasoline automobiles. 2) MB specifies only full synthetic oils be used for the extended drain intervals computed by the FSS system.

There aren't too many oils which qualify on both counts - one or the other, yes, but not both. If the dealer isn't using a synthetic CG-4 oil it's not that big a deal, but in such case I would recommend more frequent oil changes - perhaps 5K-7K miles rather than the 10K-12K the FSS system is likely to recommend.
Reply With Quote
Old 07-09-2001, 09:58 PM
Registered User
Join Date: Jan 2000
Location: PA
Posts: 5,440
I've been driving MB diesels for 30+ years and the new oil that was put in looked like the used oil that was drained out as soon as the engine was run and the oil checked on the dip stick.
I also have a Case Diesel tractor and the oil in that is always dark brown, even though it burns the same fuel. I can't explain why it is different. Another difference in the Case engine compared to MB engines is that the Case idles quiet like a gas engine and sounds like the hammers of hell under full load. Maybe its because the Case is a direct injection engine.
Reply With Quote


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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Oil Additives Bill Wood Performance Paddock 6 08-24-2011 10:53 AM
Problem: The oil pressure light stays on toka Tech Help 4 11-22-2008 04:44 PM
UPDATE - 560SEL Oil Pressure - SUCCESS!! moedip Tech Help 5 10-06-2008 06:48 PM
HELP! Oil all over engine compartment! rjk Tech Help 33 04-16-2006 11:20 AM
Engine Oil Additives blueriomedina Tech Help 25 11-05-2004 07:34 PM

All times are GMT -4. The time now is 01:15 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page