The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Chemical Properties - something seems strange about those numbers. 850 1996

posted by  pablos on  Sun Jul 28 02:10 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue May 22 00:43 CST 2001
[RELATED]

Flash point seems about right, but rather low for a true synthetic without pour point agents.

Pour point is relatively high at -27°F for a synthetic 5W-40. For example the Amsoil HD Syn 15W-40 is -47° F.

SG, no comment.

Viscosity, are you sure that's 40°C? 14-15 centistokes (per ASTM D-445) seems really thin....maybe that's the number for 100°C? (I would expect a number like 90 cSt or so at 40°C)

I tried getting to the tech numbers page at Shell Rotella and it said the specs page is down. Do you have a link? I need to see more numbers, before I draw any conclusions.

Again I don't think you would have any problem with this oil and 3000 mile intervals. I would hesitate to use if for longer drain intervals and here is why: looking at the few numbers you gave me in combination with the price, it seems that this oil MAY not be a true 100% synthetic as Amsoil, Mobil and Redline, et al are. By true synthetic I don't mean hyrodrcracked petroleum oil, or lawyer defined, I mean synthetic base stocks that are truly organochemically synthesized starting with smaller feedstock molecules and made into a specific lubricating molecule. Synthetic oils are made of these (typically in a class called polyalphaolefins) and for some synthetic lubes some diesters along with antiwear chemistry, antifoam, acid nuetralizers, etc)

Also I want to stress that the numbers given have not much to do with wear characteristics there are tests for these numbers along with volatility, shear that I would like to see as well.
--
http://www.fidalgo.net/~brook4/oilslubesfilters.html






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.