Recent Topics
no leaks,no consumption,ok to use maxlife hm oil?
by mkskud
09/26/16 01:02 PM
"Saudi Arabia Is Buying Up America's Oil Assets"
by wemay
09/26/16 11:59 AM
Cleaning EGR valve
by ARB1977
09/26/16 11:28 AM
Mobil-1 high milage now going SN??
by SOHCman
09/26/16 10:31 AM
2000 L67 PU 5w30
by Trav
09/26/16 10:20 AM
Spray gun for FF or CarWell or Krown
by Donald
09/26/16 10:01 AM
Certified CRV or Sante Fe?
by Doog
09/26/16 09:43 AM
Everstart battery Walmart
by marine65
09/26/16 08:56 AM
jumping battery to discharged battery, amp drain?
by sdowney717
09/26/16 08:29 AM
Does conventional oil protect better?
by Doublehaul
09/26/16 08:15 AM
2009 Kia Sorento Cam Timing
by NYEngineer
09/26/16 06:52 AM
Trans Flush Advice
by Local Color
09/26/16 12:04 AM
Newest Members
Rocdoc27, andy1400, KevinTate, jerseyguy123, Robin2
59194 Registered Users
Who's Online
74 registered (2010Civic, 09_GXP, Al, AIRJAC3, 4WD, 901Memphis, 10 invisible), 2196 Guests and 18 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
59194 Members
66 Forums
254941 Topics
4187602 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: 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: 17462
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: 17462
Loc: Iowegia - USA
[LOL!]

A bananna also has esters. [Big Grin]

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

Top