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 05-04-2011, 08:19 PM
Registered User
 
Join Date: Mar 2005
Location: Yountville, CA
Posts: 1,175
MM Oil for Rings Procedure?

So while my new to me car (1975 W115 300d) is down with various cleaning and repairs, I thought I would squirt some MM oil in open GP ports. From what I have read, it sounds like this is most effective over a week's time and important to rotate crank every few days to distribute MM oil and assist in unsticking rings. This car sat for at least one year and I have zero history on the engine. I have adjusted valves, treated fuel, removed battery to charge and desulphate, bead blasted battery tray and recoated with POR 15, will change fuel filters and diesel purge after start up. I will eject any remaining MM oil out GP ports by spinning crank with starter motor and GP's removed. Does this procedure sound reasonable for a car that has been sitting? I will change oil after start up, might even drain a little oil and add two quarts of ATF while driving gently for a couple of hundred miles and then drain and add new oil/filter. I have read here that ATF can assist in cleaning up internals on these older diesels. I will also run several tanks through car of dieselkleen treated diesel -should be interesting, wish me luck!

Reply With Quote
  #2  
Old 05-04-2011, 08:24 PM
Registered User
 
Join Date: Jul 2008
Location: virginia
Posts: 496
I would not drive it with some ATF in the oil. Just put motor oil in. Otherwise sounds good.
__________________
1977 240D turbo
Reply With Quote
  #3  
Old 05-04-2011, 09:45 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 35,067
X2 on what 47dodge said.

I did the MM soak on my Volvo and it got rid of the hazy gray smoke I had all of the time the Engine was running; after the Car sat 1 year and I drove 6 months with a Thermostat that was opening too soon.
The MM cured that.

I did the soak on the Mercedes while I struggled with my B2 Piston and Drive Shaft issues. However, it seemed to have no effect (I was wishing for less Blow-by).
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #4  
Old 05-04-2011, 09:49 PM
bamba's Avatar
The Dude Abides
 
Join Date: Dec 2007
Location: Portland, OR
Posts: 240
On your first start, I'd also recommend holding down the stop valve while you crank, allowing oil pressure to build while cranking the motor (relatively) slowly. Once the oil pressure gauge hits 3, let her rip. You can never be too cautious when starting a presumably dry motor that has sat for a long time.
__________________
-1985 300TD - 324k mi on chassis. MB "Tauschaggregat" 617 motor + 4-speed conversion
Alaska Roadtrip 2009
-1998 E320 Wagon - 310k mi
-2002 E320 Wagon - 197k mi
Reply With Quote
  #5  
Old 05-04-2011, 10:22 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,355
I let me 307d sit for a year twice and just started it up and drove it like I parked it the day before. No problems.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #6  
Old 05-04-2011, 11:49 PM
Registered User
 
Join Date: Mar 2005
Location: Yountville, CA
Posts: 1,175
Quote:
Originally Posted by bamba View Post
On your first start, I'd also recommend holding down the stop valve while you crank, allowing oil pressure to build while cranking the motor (relatively) slowly. Once the oil pressure gauge hits 3, let her rip. You can never be too cautious when starting a presumably dry motor that has sat for a long time.
Great idea, thanks!
Reply With Quote
  #7  
Old 05-05-2011, 02:41 AM
Stretch's Avatar
...like a shield of steel
 
Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
I used ATF to soak the pistons and rings with a head removed as I can't get MM here - it did quite a good job of cleaning everything up.

Unfortunately (for my wallet at least) I had to go deeper and strip the bottom part of the engine too for machining so I never got to run the engine with ATF on any of the surfaces.

I'm interested to hear why MM is OK and ATF isn't - I've never even seen MM - is it of a similar viscosity?
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote
  #8  
Old 05-05-2011, 03:22 AM
Registered User
 
Join Date: Mar 2005
Location: Yountville, CA
Posts: 1,175
Quote:
Originally Posted by Army View Post
I used ATF to soak the pistons and rings with a head removed as I can't get MM here - it did quite a good job of cleaning everything up.

Unfortunately (for my wallet at least) I had to go deeper and strip the bottom part of the engine too for machining so I never got to run the engine with ATF on any of the surfaces.

I'm interested to hear why MM is OK and ATF isn't - I've never even seen MM - is it of a similar viscosity?

yep, very light like ATF. Many mechanics like to use it for assembly oiling after rebuilding and other machining operations -good stuff!

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 10:54 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