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 05-03-2007, 01:17 AM
Registered User
 
Join Date: Sep 2006
Location: NorCal
Posts: 54
2 stroke oil

anyone ever add a little, like 12oz to a whole tank? I have the last 2 fills, seems to run a little bit smoother. Any one know if this is bad? Just thinking that with ULSD, this could help.

__________________
'80 300SD - 315,xxx miles,
'79 300SD - 199,xxx miles
Reply With Quote
  #2  
Old 05-03-2007, 01:23 AM
ForcedInduction
Guest
 
Posts: n/a
There is no point to adding it unless you need to get rid of it. It won't hurt anything, it's just a waste of expensive oil.

ULSD won't cause any harm on it's own so don't worry about it.
Reply With Quote
  #3  
Old 05-03-2007, 01:28 AM
log673's Avatar
I pity the fool...
 
Join Date: Nov 2006
Location: Memphis, TN
Posts: 81
Ahh...the placebo effect.
__________________
"There are a lot of pebbles on the beach, but there's a Little Rock in Arkansas."

Logan

1983 300D Turbodiesel
1976 300D Rustdiesel
Reply With Quote
  #4  
Old 05-03-2007, 01:38 AM
Registered User
 
Join Date: Sep 2006
Location: NorCal
Posts: 54
like i said, seems to. I did not straight claim that it did - thats why i'm asking. So here is a different question, why do you add 2stroke oil for 2 stroke engines?
it's to, "lubricate" something right? Like I said. I am NOT claiming that it really does anything, just curious if anyone here had any facts or experience is all.
__________________
'80 300SD - 315,xxx miles,
'79 300SD - 199,xxx miles
Reply With Quote
  #5  
Old 05-03-2007, 01:45 AM
ForcedInduction
Guest
 
Posts: n/a
2-stroke oil lubricates the crankshaft, rod, cylinder walls and piston pin. Since the fuel passes through the crankcase before it goes into the combustion chamber, there is no oil sump like on a 4-stroke engine. Therefore, the engine has to be lubricated by something. Gasoline is an extremely poor lubricant so oil must be mixed into it or the engine would seize. The oil in the gas coats everything as it passes through the crankcase.
Reply With Quote
  #6  
Old 05-03-2007, 06:03 AM
Shorebilly's Avatar
Marine Engineer (retired)
 
Join Date: Aug 2006
Location: West Virginia
Posts: 1,268
Arrow I wonder about the gunk it causes.....

Quote:
Originally Posted by ForcedInduction View Post
2-stroke oil lubricates the crankshaft, rod, cylinder walls and piston pin. Since the fuel passes through the crankcase before it goes into the combustion chamber, there is no oil sump like on a 4-stroke engine. Therefore, the engine has to be lubricated by something. Gasoline is an extremely poor lubricant so oil must be mixed into it or the engine would seize. The oil in the gas coats everything as it passes through the crankcase.
Have any of y'all ever cleaned the carbs on an outboard motor that has been put away without draining the carbs or adding a fuel preservative??? That 2 stroke oil leaves quite a residue, just like it's supposed to do....read Forced's description of the 2 stroke lube process.....

If you must use an additive, look into the Power Service line of Diesel Fuel additives.....will be way cheaper and more beneficial to your engine.....

SB
__________________

Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG
Reply With Quote
  #7  
Old 05-03-2007, 07:08 AM
Waitn For The Bus All Day
 
Join Date: Jul 2004
Location: south east pa.
Posts: 1,786
I had a case of 2 stroke boat motor oil left over from a boat I had. Added that to my tank and ran it. Only difference I noticed was the smell and a bit more smoke.

Cheers,

Bill
Reply With Quote
  #8  
Old 05-03-2007, 09:57 AM
Registered User
 
Join Date: Sep 2005
Location: Bucharest
Posts: 67
Exclamation Debate

Here is a 67 page and counting debate about using 2 stroke oil to lubricate your injection system: http://www.cumminsforum.com/forum/alternative-fuels-additives-oils-lubricants-sponsored-holland-court-sales/4054-first-time-w-2stroke-oil.html

It's mainly about protecting onld cummins engines from ULSD effects on the injection pump over long term. I don't know if it's the same for old MB diesels but the general consensul there is that this could be beneficial to older Diesels.
Reply With Quote
  #9  
Old 05-03-2007, 10:07 AM
Craig
Guest
 
Posts: n/a
When did everyone with an internet connection decide they were a lubrication engineer? Why is there always a "consensus" that running just about anything except diesel fuel in a diesel engine is "beneficial"?
Reply With Quote
  #10  
Old 05-03-2007, 11:03 AM
Waitn For The Bus All Day
 
Join Date: Jul 2004
Location: south east pa.
Posts: 1,786
Quote:
Originally Posted by Craig View Post
When did everyone with an internet connection decide they were a lubrication engineer? Why is there always a "consensus" that running just about anything except diesel fuel in a diesel engine is "beneficial"?
It's a new frontier Craig.

Cheers,

Bill
Reply With Quote
  #11  
Old 05-03-2007, 11:08 AM
Registered User
 
Join Date: Sep 2005
Location: Bucharest
Posts: 67
Because that "might" catch the atention of a real engineer.

Second it's clear enough that today's diesel fuel is different from what we had a few years ago. Maybe something has to be done about this.
Reply With Quote
  #12  
Old 05-03-2007, 11:09 AM
Dee8go's Avatar
Senor User
 
Join Date: Apr 2006
Location: The People's Republic of Arlington, VA
Posts: 7,193
I always loved that smell of the exhaust from a two stroke, outboard motor. It brings back fond memories of summers as a kid on the water.
__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles
Reply With Quote
  #13  
Old 05-03-2007, 11:47 AM
Waitn For The Bus All Day
 
Join Date: Jul 2004
Location: south east pa.
Posts: 1,786
Quote:
Originally Posted by Dee8go View Post
I always loved that smell of the exhaust from a two stroke, outboard motor. It brings back fond memories of summers as a kid on the water.
Or a ride on a dirt bike.

Cheers,

Bill
Reply With Quote
  #14  
Old 05-03-2007, 01:08 PM
Craig
Guest
 
Posts: n/a
Quote:
Originally Posted by Meridivs View Post
Because that "might" catch the atention of a real engineer.

Second it's clear enough that today's diesel fuel is different from what we had a few years ago. Maybe something has to be done about this.
As a real engineer, I would recommend running your engine on the fuel it was designed for, #2 diesel. ULSD does meet the ASTM fuel standard (D-975) for lubricity, although additional additives were required to meet that requirement. The required additives were added "upstream" of the pump. If, for some reason, you feel compelled to add something extra to your fuel, try one of the additives specifically designed for diesel fuel.

Has anyone seen a recommendation from MBUSA to add anything to pump ULSD? Last I heard, they were recommending straight #2 diesel or up to B5 biodiesel. I understand that it's fun to "experiment" but sometimes we should just listen to the folks who designed the engine.
Reply With Quote
  #15  
Old 05-03-2007, 06:05 PM
Registered User
 
Join Date: Nov 2002
Location: Wakefield, RI
Posts: 2,145
Quote:
Originally Posted by Craig View Post
Has anyone seen a recommendation from MBUSA to add anything to pump ULSD? Last I heard, they were recommending straight #2 diesel or up to B5 biodiesel. I understand that it's fun to "experiment" but sometimes we should just listen to the folks who designed the engine.
I highly doubt MB really gives a crap what we do with our 20yr old diesels. Nor do I think they are doing any kind of R&D on possible damage to our antique fuel systems. MB would be perfectly happy if ULSD killed ALL of our IP's. We are all "potential customers" after all. Adding a couple of ounces of 2-cycle oil to each tank will not hurt anything. It MAY help but I doubt you will see anyone, MB, aftermarket fuel additive supplier, etc. admit that 2-cycle would be beneficial. It would take money out of their pockets. 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
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 10:25 AM.


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