Recent Topics
2013 Accord K24W1 DI - TGMO 0W20 SN - 10064 miles
by Leonardo629
09/30/14 04:17 PM
Amsoil Saber 2-cycle oil and gas preservative?
by btanchors
09/30/14 04:01 PM
A few new Walmart oil prices
by bigt61
09/30/14 03:03 PM
cleaning combustion chamber
by james1950
09/30/14 02:48 PM
The recall merry-go-round spins again...
by 440Magnum
09/30/14 02:00 PM
When in D or O-D car won't accelerate beyond 25mph
by JasonTL
09/30/14 01:18 PM
Brand New 2012 Scag Tiger Cat ?
by lawnguy
09/30/14 12:44 PM
Kawasaki reveals most powerful motorcycle ever !
by FastGame
09/30/14 12:42 PM
Dr Dons radio repair-recommended
by Russell
09/30/14 12:31 PM
1989 Chevy 5.7 need new catalytic to pass CA smog
by zanzabar
09/30/14 12:27 PM
Heat pump for winter heating
by datech
09/30/14 12:22 PM
13 Fusion 1.6L Ecoboost, Amsoil SS 5w20, 9.7/28.5k
by jeff7181
09/30/14 12:05 PM
Newest Members
Hemingway, kcp, tgrudzin, jeff7181, JoshsCummins
51456 Registered Users
Who's Online
108 registered (1345, andrewlg, 95MarkVIII, 2oldtommy, 2KBMW, abycat, 11 invisible), 1848 Guests and 145 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51456 Members
64 Forums
220030 Topics
3474304 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