Recent Topics
Do I need a better tire for PNW trip?
by The_Eric
05/29/16 11:51 PM
Turtle Beach PC headset hack
by asand1
05/29/16 11:34 PM
Lengthy question for the seasoned oil gurus
by Jetstreamz06
05/29/16 11:10 PM
Jeep Cherokee Heater Valve - Brands?
by Nick1994
05/29/16 11:00 PM
Hyundai Entourage/Kia Sedona minivans
by Number_35
05/29/16 10:41 PM
Oil in air breather tubing
by Nissan101
05/29/16 10:06 PM
Dust caps needed to protect wheel bearings?
by Drew99GT
05/29/16 09:51 PM
2014 Mazda CX5 SkyActiv
by Matt_V
05/29/16 09:38 PM
getting rid of pwc with intermittent problem?
by motor_oil_madman
05/29/16 08:36 PM
Difference between silicone caulking ?
by Merkava_4
05/29/16 06:15 PM
The Top Dexos2 Oil Available in the USA is What?
by Best F100
05/29/16 05:24 PM
Virgin Puro L14006 [Cut open]
by Run
05/29/16 05:13 PM
Newest Members
Moutainman31282, AlaninPA, z0bug33, smitty31, jimshep
58013 Registered Users
Who's Online
56 registered (4WD, 2010Civic, 79Eldor, AirgunSavant, 3800Series, 6 invisible), 991 Guests and 321 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
58013 Members
66 Forums
249581 Topics
4085942 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#586492 - 07/25/03 07:05 AM Any opinions??
Mike Piles Offline


Registered: 07/24/03
Posts: 1
Loc: Arnold, MO
Done by OilGuard
Oil: Caterpillar 5W40 SDEO
Miles on oil 10166
Miles on Car 91766

Aluminum 4
Chromium 4
Copper 8
Iron 23
Lead 0
Tin 1
Silicon 9
Potassium 0
Sodium 0
Water <0.1
Oxidation 64.4
[email protected] 17.0
Glycol None Detected
TBN 3.4
Soot 0.8

Notation.

All engine wear rated appear normal. High degree of oxidation Indicated. Suspect high operating temperature and/or over extended drain interval.

Any opinions would be appreciated.

Thanks
Mike Piles

--------------------
Mike
00 Green VW Jetta 5 speed TDI

Top
#586493 - 07/25/03 09:18 AM Re: Any opinions??
TooSlick Offline


Registered: 08/02/02
Posts: 5785
Loc: Dixie
Mike,

I think you need to thoroughly clean your EGR valve. I believe what is happening here is the valve is stuck open with oil/soot deposits. This is allowing lots of exhaust loaded with oxides of sulphur and nitrogen into the combustion chamber and generating very high levels of nitration/oxidation. Both these processes result in the formation of organic acids, which is depleting the TBN. In addition, oxidation essentially increases the molecular weight of the oil and is causing the thickening you see.

The wear rates look pretty good, but running with very high rates of oxidation will result in the gradual formation of sludge/varnish/carbon deposits. So this isn't something you want to let continue. It is very uncommon to see Delvac 1 degrade like this in the TDI ...!

TooSlick

Top