Recent Topics
High mileage oils vs high mileage oils
by aquariuscsm
09/17/14 01:41 PM
5w30 vs 10w30
by leroyd92
09/17/14 01:00 PM
2002 dodge dakota p0305 code - misfire
by Gilberttribe
09/17/14 12:55 PM
Purolator is listening
by HangFire
09/17/14 12:27 PM
Scent of refrigerant vs oil
by JHZR2
09/17/14 11:25 AM
2011 Coyote powered Ranger for sale
by 01rangerxl
09/17/14 10:33 AM
Run a Fram Ultra For 2 ~ 3 OCI's ?
by ChrisD46
09/17/14 10:31 AM
Tricks to opening door on '90 Buick LeSabre
by bullwinkle
09/17/14 10:23 AM
Consumer Reports includes Chinese tires...
by Hokiefyd
09/17/14 10:00 AM
cleaning painting holley carburetor
by 1 FMF
09/17/14 09:51 AM
Brick spray on sealer
by stockrex
09/17/14 09:46 AM
Do I need a new battery?
by Win
09/17/14 09:43 AM
Newest Members
_diesel_, Glenno9, dwsmith43, Mathew_Boss, Scotthew
51323 Registered Users
Who's Online
96 registered (1345, 440Magnum, 3800Series, 123Saab, 74DartSport, 10 invisible), 1766 Guests and 227 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51323 Members
64 Forums
219368 Topics
3461786 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Topic Options
#3407761 - 06/26/14 03:55 PM TBN methodology changing at Blackstone
Kristin Huff Offline


Registered: 10/31/02
Posts: 25
Loc: Ft. Wayne, IN
Dear BITOG Members: We wanted to let you know that we are changing our TBN testing process slightly. We have always run a modified version of ASTM D-4739, but our machine was calibrated using standards that more closely matched to ASTM D-2896. We are now moving to standards that are more closely aligned with D-4739 and the only difference we have noticed is a slight drop in virgin oil TBN readings. The used oil TBN readings are not expected to change much at all, but virgin oils will tend to read a little lower. ASTM D-2896 is a method used by oil companies to provide TBN readings for their virgin product. It uses stronger acids than ASTM D-4739, so it tends to give higher readings. Since we mostly see used oil, we picked ASTM D-4739 as our method of choice, and this change in standards should give us more consistent readings. (ASTM methods are generally available at your local library at no change if you want to see the actual method.)

Because BITOG members tend to watch virgin TBN readings closely, we wanted to let you know about this change. And to help smooth out the transition, we will also be willing to run any samples you wish under both methods so you can see for yourself what type of differences occur. If you want to take advantage of this, just send in your sample and ask for both TBN methods on the oil information slip. Feel free to contact me with any questions you might have.

Sincerely,
Ryan Stark
Blackstone Laboratories Inc.
260-744-2380

Top
#3407773 - 06/26/14 04:15 PM Re: TBN methodology changing at Blackstone [Re: Kristin Huff]
tinmanSC Online   content


Registered: 09/07/10
Posts: 1915
Loc: Oswego, IL
umm... awesome, I guess? Will continue to send samples in!
_________________________
Cost of Hobby=2L
(Where L=Cost of Lubricant)
95 Lexus SC300 5-spd@200K, 2000 GS300@120K both VML Full Syn+Purolator PSL20195(soon to be Wix)

Top
#3407778 - 06/26/14 04:24 PM Re: TBN methodology changing at Blackstone [Re: Kristin Huff]
OneEyeJack Online   content


Registered: 09/14/10
Posts: 1130
Loc: California
As long as the TBN is close, the trend would be what I'm interested in for any particular vehicle.

Top
#3407809 - 06/26/14 05:12 PM Re: TBN methodology changing at Blackstone [Re: Kristin Huff]
Kuato Offline


Registered: 10/23/05
Posts: 3015
Loc: Northeastern MT
This should be stickied so everyone can see it.


Ryan/Kristen, do you have an approximate difference in initial TBN between the two methids?
_________________________
04 Jeep Wrangler 2.4, 4.10, MT 183k
13 F150 4x4, Heavy Payload package 3.73, 5.0, 22k

both on Amsoil

Common sense isn't common any more. Is it.

Top
#3407827 - 06/26/14 05:55 PM Re: TBN methodology changing at Blackstone [Re: Kristin Huff]
yvon_la Offline


Registered: 05/20/14
Posts: 740
Loc: quebec canada
Ty blackstone for going to this trouble in the name of real world accuracy.awsome job!this will likely give more accurate result for used oil analysis comparo .since thw other way differed slightly
_________________________
Truck driver
Nissan versa note s 2014
Mechanicly inclined

Top
#3411068 - 06/30/14 04:35 PM Re: TBN methodology changing at Blackstone [Re: Kuato]
Kristin Huff Offline


Registered: 10/31/02
Posts: 25
Loc: Ft. Wayne, IN
Sorry about the delay in getting back to your question. I believe the new TBN method will give results that are 25% lower than our old method.

Sincerely,
Ryan Stark
Blackstone Labs

Top