Recent Topics
Lowest NOACK VW 502/504 Oil
by DasTurboWagen
10/20/17 02:17 PM
Hexagonal Boron Nitride - Recent Research and ?
by IanB2017
10/20/17 01:58 PM
Pennzoil Platinum Dexos 1 Gen. 2
by bigj_16
10/20/17 01:28 PM
Rare Lawn Boy 22261 mower -$599
by Best F100
10/20/17 01:08 PM
3M Foaming Salt Remover
by SatinSilver
10/20/17 12:11 PM
OBDII Scanner-You get this in your message box?
by ARCOgraphite
10/20/17 11:43 AM
AMSOIL 15W-40 HD Diesel and Marine Oil shelf life
by alleghenyrose
10/20/17 11:28 AM
what happens to a car after we sell it?
by jstert
10/20/17 10:53 AM
Europe, Asia, Australia/NZ members- Schaeffer Oil
by Kuato
10/20/17 10:29 AM
Replacing Bump stops - why?
by LeakySeals
10/20/17 10:12 AM
Christmas shopping days to go
by CourierDriver
10/20/17 08:50 AM
Extended Oil Change ?
by yankees1
10/20/17 08:31 AM
Oil choice for S350d
by bigjl
10/20/17 06:45 AM
Mobil1 0w20 EP, 9924 miles, 2010 Civic
by Astro_Guy
10/20/17 06:22 AM
Edge 10W30, Penrite HPR 5, MaxLife 20W50 in Aust.
by SR5
10/20/17 04:23 AM
That's all folks....last Aussie car produced today
by Shannow
10/20/17 02:41 AM
Under valve cover pics
by barkingspider
10/20/17 01:50 AM
Simple Tire. Are they good?
by WhyMe
10/20/17 12:59 AM
Fuel injected Toyotas
by OneEyeJack
10/20/17 12:12 AM
Opinions on Engine Flushes?
by DimondPhilup
10/20/17 12:10 AM
Newest Members
RaisinCane, thkilroy, perknz, JEByrd, theJackpile
63171 Registered Users
Who's Online
69 registered (barryh, AutoCoil, Alfred_B, babyivan, Astro_Guy, 14Accent, 5 invisible), 2170 Guests and 11 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
63171 Members
66 Forums
272519 Topics
4524349 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: 18311
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: 18311
Loc: Iowegia - USA
[LOL!]

A bananna also has esters. [Big Grin]

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

Top