I just recieved this data from our local oil distributor. It is the update on the new Mobil 1 formulation and that for the new Castrol Syntec. They did not have the numbers for the new Valvoline synthetics yet. The data on the new Mobil 1 is pretty impressive. Based on these numbers, price, and availiability, there is little need to look further for a synthetic oil. The Syntec seems to be compromised by it's wide viscosity range. Notice that the pour point is for all practical purposes, no better than the Mobil 1 15W-50. (actually, it's not as good) While, meeting the viscosity parmeters, the wide range is probably for marketing purposes. The Mobil 1 15W-50 will pump at -35 degrees F, which is as good as some conventinal 5W-30 oils. Any of the ester based synthetics (AMSOIL, Mobil 1, and Syntec), will give you the benefits that Castrol is making a big deal of in their advertising. The ability to cling to metal walls is due to the polar nature of the ester base stock, not something unique to Castrol's formulation. The Data: (add to your current article) Brand and Weight VI Flash Pour %ash %zinc Syntec 5W-50 180 437 -49 1.2 0.10 Mobil 1 5W-30 165 445 -65 --- --- 10W-30 160 450 -65 --- --- 15W-50 170 470 -55 --- --- Ed Hackett edh@wheeler.wrc.unr.edu The Desert Research Institute DoD #0200 WMTC BMWRA DIOC Reno, Nevada (702) 673-7380 KotLS KtoLE DotD #0003 I'm not really a chemist, I'm just one of 900SS K100RS 501 CAMEL them motorsickle sonsabitches. __=o&o>__ --------------------------------------------------------------------------- --
***************** That's all folks! John Ritchie ritchiej@ucs.orst.edu
|
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.