Recent Topics
Nostalgic, where does crude come from commercial
by wemay
02/27/15 03:03 PM
Castrol GTX
by doolah02
02/27/15 02:46 PM
Ford 4R100 - Amsoil Signature or Torque-Drive???
by AdmiralYoda
02/27/15 01:14 PM
Leonard Nimoy Passes Away at 83
by 2010_FX4
02/27/15 11:48 AM
Used '04 F-450 w/ 6.0 PSD - Good idea or disaster?
by 92saturnsl2
02/27/15 11:24 AM
Brake Fluid Exchange Cost?
by lancerplayer
02/27/15 11:04 AM
Virgin Mopar Mo-090
by dlundblad
02/27/15 10:57 AM
Anyone used or tested Napa 15w40?
by MoreCowbellAz
02/27/15 10:41 AM
New Honda Ridgeline rendering....
by andrewg
02/27/15 10:37 AM
How warm does your unheated garage stay?
by zach1900
02/27/15 10:11 AM
SmartMeters and tinfoil crowd
by Vikas
02/27/15 10:04 AM
Rotella for Break In?
by GEM
02/27/15 10:02 AM
Newest Members
ricoinusa, Pr0j3ct_x, eajseo, EuroGS, christoff
52968 Registered Users
Who's Online
104 registered (3for3, AandPDan, 2010_FX4, 14 invisible), 1759 Guests and 208 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52968 Members
66 Forums
227282 Topics
3624784 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#586494 - 08/01/03 05:21 AM MB 300D potassium in oil analysis?
brian Offline


Registered: 01/28/03
Posts: 188
Loc: Colorado
Here are the oil analysis from a 1987 300D 6 cyl 3.0L IDI diesel engine. The engine sat for 2 years before I installed it in my car. It has 186,000 miles.

The first numbers are the most recent analysis, with 6200 miles on the oil - Mobil 1 SuperSyn 15w-50. The engine burns about 1 quart every 5,000 miles.

The second set of numbers in was the first oil I put in the engine, with about 2800 miles it was a combination of leftover synthetic oils, mostly Mobil 1 Tri-Syn 15w-50.

Iron 26 49
Chromium 1 2
Lead 2 9
Copper 2 10
Al 5 7
Nickel 0 4
Silver 0 0
Silicon 6 11
Boron 112 36
Sodium 7 39
Magnesium 125 403
Calcium 2882 3045
Barium 0 0
Phosphorus 1076 1038
Zinc 1222 1244
Moly 67 77
Potassium 28 29
Fuel less than 1% less than 1%
Visc 16.82 13.63
Soot 1.2 0.3
Glycol NEG NEG
TBN 11.24 9.89
Oxid 4 6
Nitr 2 2
F-Soot 1.23 0.38

I am curious where this Potassium may be coming from? Could it be leftover in the oil pan that hasn't managed to drain out yet? Is it just coincidential that its 28-29 ppm both times even though the drain interval is slightly more than 2X the first interval?

-brian

Top
#586495 - 08/02/03 09:01 AM Re: MB 300D potassium in oil analysis?
MolaKule Offline


Registered: 06/05/02
Posts: 15046
Loc: Iowegia
Since you have negative glycol, and a good dose of boron, I'd say the potassium is from the new Potassium Tri-Borate additive.

Top
#586496 - 08/02/03 06:07 PM Re: MB 300D potassium in oil analysis?
mrchecker Offline


Registered: 05/13/03
Posts: 179
Loc: Newtown Square, PA
Or you dropped a bannana in there. [Big Grin]

Top
#586497 - 08/03/03 03:05 AM Re: MB 300D potassium in oil analysis?
MolaKule Offline


Registered: 06/05/02
Posts: 15046
Loc: Iowegia
[LOL!]

A bananna also has esters. [Big Grin]

Hmmm, maybe a new, great smelling motor oil is in the works!?!?!?

Top