Recent Topics
Wix 57064 cartridge filter
by Rat407
12/19/14 09:04 AM
Bando/Dayco/Gates/AC
Delco/OEM/Goodyear belts...

by mrsilv04
12/19/14 08:54 AM
Favorite movie clips
by Blaze
12/19/14 08:29 AM
What kind of car is this?
by MalfunctionProne
12/19/14 08:01 AM
Where is Flight MH370?
by MalfunctionProne
12/19/14 07:34 AM
Who knew?
by SaturnIonVue
12/19/14 02:42 AM
Mobil 1 0w40 4.4L jug $28 at Canadian Tire
by dgunay
12/19/14 01:33 AM
Considering Mazda 3, 6, CX3 or CX5 as next car
by hotwheels
12/19/14 01:07 AM
Looking for Corrado fog light (1994)
by hotwheels
12/18/14 11:26 PM
Hello
by hotwheels
12/18/14 11:21 PM
(Unintentional) Bottle Aged Beer
by aa1986
12/18/14 09:28 PM
ADBV on Fram PH9837?
by Digital2k2
12/18/14 09:09 PM
Newest Members
sam369, hotwheels, oilpsi2high, Joemc, gijello
52222 Registered Users
Who's Online
94 registered (A_Harman, 72te27, aquariuscsm, 3800Series, Bandito440, 147_Grain, 5 invisible), 1251 Guests and 177 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52222 Members
66 Forums
223634 Topics
3546049 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
Visc@100 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