Recent Topics
Thanksgiving
by hr1940
29 minutes 6 seconds ago
OEM 96-00 Honda Civic and del sol parts BNIB
by iluvhonda
Yesterday at 11:37 PM
3-1/2 year old Landcruiser <40,000 miles
by Shannow
Yesterday at 11:11 PM
ESET 2015 nod32 antivirus 5$ no rebate
by Rand
Yesterday at 10:48 PM
I got some Mag 1 Dexos at Pep Boys for $3/qt
by tommygunn
Yesterday at 10:47 PM
91 Civic 3door hatch Si-brake dash light-starter
by Gito
Yesterday at 10:43 PM
A question, & opinions are welcome also
by kenv
Yesterday at 10:39 PM
Linux Mint and my new Hexa-Core Build
by redhat
Yesterday at 10:35 PM
Agenda 21
by ron17571
Yesterday at 10:23 PM
Rural King oil $1.49
by dlundblad
Yesterday at 09:18 PM
Time to brine the turkey!
by Pajamarama
Yesterday at 09:10 PM
More Air bag stuff
by ls1mike
Yesterday at 09:06 PM
Newest Members
Visco, papajetta, MalfunctionProne, royston59, TriboOilGuy
52005 Registered Users
Who's Online
18 registered (aa1986, asiancivicmaniac, Fuzz1, hr1940, Blkstanger, 3 invisible), 677 Guests and 197 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52005 Members
66 Forums
222664 Topics
3524893 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3435051 - 07/25/14 08:28 AM Rotella T6 5w-40, 13,015 mi., 2003 Jetta ALH
R80RS Offline


Registered: 06/05/13
Posts: 630
Loc: Wisconsin USA
The vehicle in this report is my primary commuter, and sees 90 to 120 moderate highway miles daily, with longer interstate trips from time to time. It never sees trips of less than 15 miles.

The oil filter in this interval was a Mann HU 726/2 X.

The 1/2-quart of make up oil was added about halfway through the interval, or about 7,000 miles before the sample was taken. Total sump capacity is 4.8 quarts.

For some historical context, the oil in the column dated 10-6-13 was T6 and in the 3-9-14 interval it was Amsoil HDD 5w-30. I notice an increase in some additive elements (Zn, P, Mg, allowing that the increased Ca may be carryover from the Ams HDD) between the T6 used in the 10-6-13 interval and this one. Did SOPUS fortify the add pack of T6 or is something else going on?

What's the consensus opinion on the lead level Blackstone flagged? How often do these trends resolve themselves (trend down) versus indicate a serious problem?

Any other comment or insight is welcome!

_________________________
2004 F150 189k mi. Amsoil XL 5w-20, Fram Ultra
2004 Freestar 238k mi. SOPUS blend 5w-20, FL-400S
2003 VW Jetta TDI, 159k mi. Amsoil HDD 5w-30, Mahle

Top
#3435072 - 07/25/14 08:54 AM Re: Rotella T6 5w-40, 13,015 mi., 2003 Jetta ALH [Re: R80RS]
A_Harman Offline


Registered: 10/01/10
Posts: 4385
Loc: Michigan
A lead reading of 8 is not by itself a concern. If it's a spike, it's not a very significant one. Watch how it trends in subsequent UOA's.

You should be able to extend the OCI's significantly judging by the TBN of 5.6 at 13k miles. RT6 starts with TBN of 10.6, and Blackstone recommends oil changes at 1.0, so there is still a lot of life left in that oil. Try extending the next OCI to 16k. I think it could even go much further than that.


Edited by A_Harman (07/25/14 08:55 AM)
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

Top
#3435169 - 07/25/14 10:15 AM Re: Rotella T6 5w-40, 13,015 mi., 2003 Jetta ALH [Re: R80RS]
webfors Offline


Registered: 06/06/06
Posts: 3745
Loc: Ontario, Canada
Nice report. Strong FP, TBN, maybe some thickening going on with the visc?

If you're lead continues to trend with longer OCIs I would throttle back to ~12k.
_________________________
08 Forester 5mt, AFE 0w30, XG7317
13 Dodge GC, VWB 5w20, Mopar OF
13 Suzuki SFV650, OEM 10w40, OEM OF
All small engines; RT5 10w30

Top
#3435249 - 07/25/14 11:54 AM Re: Rotella T6 5w-40, 13,015 mi., 2003 Jetta ALH [Re: R80RS]
scurvy Offline


Registered: 02/19/07
Posts: 2275
Loc: Chicago IL USA
T6 has always been IMO the best bang-for-the-buck TDI oils for non-CR engines. Great looking report, you should consider running it even longer.

Lead is a minor spike, might be from a particle streak through a bearing. I wouldn't worry about it unless it continues to trend upwards over the next few UOAs.
_________________________
You are entitled to your own opinion but not your own facts.

06 VW Golf TDI - M1/Delvac 1300 7.5w40ish, HU726/2x, EaBP90
12 Mazda 5 - M1 0W20, FL910S

Top