Recent Topics
FRAM PH30 Cut Open
by HX520W
02/21/17 02:52 PM
FRAM TG3614 Cut Open
by HX520W
02/21/17 02:32 PM
videos 4 latest military planes R interesting.
by OneEyeJack
02/21/17 02:30 PM
Bosch Premium oil filter
by Andyge
02/21/17 02:13 PM
Cover for sun visor?
by paulri
02/21/17 02:05 PM
Oil pan damage from dirt road tire ruts?
by motor_oil_madman
02/21/17 01:42 PM
2014 RAM 1500 3.6l V6 oil spec
by SavagePatch
02/21/17 01:31 PM
SuperTech High Mileage 5w30?
by 2012AccentSE
02/21/17 01:25 PM
Who has a propane generator??
by Donald
02/21/17 01:04 PM
Higher viscosity & higher wear?
by Vlad_the_Russian
02/21/17 12:20 PM
KTM LC4 Toilet Paper Filter
by DoubleWasp
02/21/17 12:15 PM
What happened to my thread?
by Lolvoguy
02/21/17 10:36 AM
Careless assembly of a factory Camaro V6?
by Ed_Flecko
02/21/17 10:30 AM
Hot water
by supton
02/21/17 10:11 AM
Best paint for wrought-iron railings
by Exit32
02/21/17 10:05 AM
Iphone updates
by grampi
02/21/17 09:48 AM
Necessity of Copper removal from the bore
by NissanHauler
02/21/17 09:31 AM
2015 kia optima turbo cabin filter blue?
by Grambo
02/21/17 09:02 AM
Recommendation on bulk P/S fluid for Honda/Acura
by redhat
02/21/17 08:52 AM
Thoughts on a '06 Buick Lucerne
by Mantooth
02/21/17 08:26 AM
Newest Members
Balou, benkovic, Jetfccrew, John7109, trentreznor321
60593 Registered Users
Who's Online
76 registered (69GTX, 2012AccentSE, Alfred_B, AandPDan, 2015_PSD, 7 invisible), 2352 Guests and 12 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
60593 Members
66 Forums
261371 Topics
4311374 Posts

Max Online: 3590 @ 01/24/17 08:07 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: 195
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: 17734
Loc: Iowegia - USA
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: 17734
Loc: Iowegia - USA
[LOL!]

A bananna also has esters. [Big Grin]

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

Top