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Search preserved mailing-list messages and current email and website contributions. Current posts are searchable before weekly archival. Recovery gaps remain possible. Words are matched together; try fewer terms if needed.

Page 1: 46 results shown for Viscosity index.

Source-balanced relevance: matches from both collections are interleaved, with source dates breaking ties. Restoration time is not the original posting date.

  • Re: vanagon Digest - 5 Feb 2007 to 6 Feb 2007 - Special issue (#2007-165)
    Historical mailing list - Keith Hughes
    Tue, 6 Feb 2007 11:59:45 -0700
    ...Synthetic lubes can be extended for both extremes as not only do they have better viscosity indexes, they do not have the waxes that...
  • Re: should 10W-40 be avoided?
    Historical mailing list - Scott De Santi
    Sun, 15 Oct 2000 17:32:54 EDT
    ...40 with no viscosity index improvers but uses some in the 10W-40 and 5W-30. Mobil 1 uses no viscosity improvers in their...
  • should 10W-40 be avoided?
    Historical mailing list - Jean-Guy Savoie
    Sun, 15 Oct 2000 15:40:49 -0300
    ...20W-50 is the same 30 point spread, but because it starts with a heavier base it requires less viscosity index improvers (polymers) to...
  • Clarity I hope.... Re : How VC's work
    Historical mailing list - (Christopher j. Pierce)
    Sat, 24 Apr 1999 20:23:11 EDT
    ...having or characterized by viscosity <~ flow> viscosity index (noun) First appeared 1929 : an arbitrary number assigned as a measure of the constancy of the...
  • Re: Oil Change - Haveline to Mobil 1
    Historical mailing list - George Goff
    Sat, 28 Dec 2002 13:25:56 EST
    ...It is available in a 15w50 viscosity index. George
  • Re: should 10W-40 be avoided?
    Historical mailing list - David Marshall
    Sun, 15 Oct 2000 17:57:15 -0700
    ...20W-50 is the same 30 point spread, but because it starts with a >heavier base it requires less viscosity index improvers (polymers) to...
  • Re: Which is better, synthetic oil or conventional oil? from the AAA website
    Historical mailing list - tmiller
    Wed, 2 Jun 2004 20:05:15 -0400
    ...Viscosity index improvers and pour point depressants are added to counter these problems but are mechanically broken down with use. For 99 cents/quart...
  • Re: no GL-4 available
    Historical mailing list - Mark Dorm
    Wed, 6 Sep 2000 01:35:23 PDT
    ...The synthetic base oils used have a very high viscosity index which provides relatively constant viscosity as temperature changes. MTL is a low 70W...
  • Re: Oil Suggestions
    Historical mailing list - Jerry
    Sun, 1 Mar 2009 23:38:04 -0600
    ...You want to choose an oil with a high viscosity index (VI). For engine "break in" you should choose an oil with zinc. I...
  • Re: 91 Vanagon, oil pressure anomaly
    Historical mailing list
    Sat, 8 Jun 1996 00:14:45 -0400
    ...This is one benfit of the synthetic oils as they naturally high viscosity index without the nead for VI improvers. The Mobil 1 15...
  • Re: Mixing oils with different weights.
    Historical mailing list - Tom Hargrave
    Fri, 20 May 2011 16:29:57 -0500
    ...The viscosity indexers add range to the base stock and are what make a 10w oil into a 10w-40. I suspect that mixing...
  • Re: no GL-4 available
    Historical mailing list - John Rodgers
    Wed, 6 Sep 2000 19:20:43 -0500
    ...The synthetic base > oils used have a very high viscosity index which provides relatively > constant viscosity as temperature changes. MTL is a low 70W...
  • Re: STP Gas Treatment
    Historical mailing list - Dennis Haynes
    Thu, 10 Mar 2011 23:51:11 -0500
    ...The oil label reflects the viscosities expected (the numbers are not actual viscosity measurements, but rather an index that the manufacturers and regulators have...
  • Re: transaxle lubricant
    Historical mailing list - Austin
    Wed, 2 Dec 1998 19:04:20 -0800
    ...The synthetic base oils used have a very high viscosity index which provides relatively constant viscosity as temperature changes. MTL is a low 75W...
  • Ed Hackett's big oil FAQ (long) Subject: New oil data
    Historical mailing list
    Thu, 14 Jul 94 8:11:24 PDT
    ...viscosity, viscosity index (VI), flash point, pour point, % sulfated ash, and % zinc. Viscosity is the measure of how thick an oil is. This is...
  • Re: synthetic tranny oil
    Historical mailing list
    Mon, 13 Nov 1995 14:20:08 -0400
    ...Dealer said "it burns bearings" but I can't accept this if it meets viscosity index specs and usual other protection factors. Mixing? Tim...
  • Re: Castrol, QT, 5W50
    Historical mailing list - Dennis Haynes
    Tue, 6 Feb 2007 14:53:31 +0000
    ...Synthetic lubes can be extended for both extremes as not only do they have better viscosity indexes, they do not have the waxes that...
  • *very long* All you need to know on Synthetic oil
    Historical mailing list - Dan Houg
    Wed, 3 Apr 1996 16:32:53 CST6CDT
    ...Also included are various oil modifiers such as pour point depressants, viscosity index (VI) improvers, and seal swell agents. Pour point depressants are added...
  • Fwd: Castrol, QT, 5W50
    Historical mailing list - mordo
    Tue, 6 Feb 2007 11:24:21 -0500
    ...Synthetic lubes can be extended for both extremes as not only do they have better viscosity indexes, they do not have the waxes that...
  • Re: STP Gas Treatment
    Historical mailing list - Dave Mcneely
    Thu, 10 Mar 2011 08:50:49 -0600
    ...The oil label reflects the viscosities expected (the numbers are not actual viscosity measurements, but rather an index that the manufacturers and regulators have...
  • Mobile1 15/50
    Historical mailing list - dylan friedman
    Tue, 6 Feb 2007 07:36:06 -0800
    ...Synthetic lubes can be extended for both extremes as not only do they have better viscosity indexes, they do not have the waxes that...
  • Re: oils and gasoline Oil Viscosity at temparature.
    Historical mailing list - Dennis Haynes
    Thu, 30 May 2013 00:40:03 -0400
    ...The synthetics usually have a wider viscosity index without as much need for modifiers and their performance can shine at temperatures far away from...
  • Re: Newbie Oil Question (Facts added)(long)
    Historical mailing list - Subject: Re: Newbie Oil Question (Facts added)(long)
    2 Apr 92 19:33:31 GMT
    ...viscosity, viscosity index (VI), flash point, pour point, % sulfated ash, and % zinc. Viscosity is the measure of how thick an oil is. This is...
  • Re: oils and gasoline Oil Viscosity at temparature.
    Historical mailing list - Dennis Haynes
    Thu, 30 May 2013 11:10:19 -0400
    ...The synthetics usually have a wider viscosity index without as much > need for modifiers and their performance can shine at temperatures far away > from...
  • Re: oils and gasoline Oil Viscosity at temparature.
    Historical mailing list - Don Hanson
    Thu, 30 May 2013 07:23:56 -0700
    ...The synthetics usually have a wider viscosity index without as much > need for modifiers and their performance can shine at temperatures far away > from...
  • Re: Make Best of Synthetic Oil?
    Historical mailing list
    Sat, 18 Sep 1993 13:27:09 GMT
    ...viscosity, viscosity index (VI), flash point, pour point, % sulfated ash, and % zinc. Viscosity is the measure of how thick an oil is. This is...
  • Re: Mobile1 15/50
    Historical mailing list - Max Wellhouse
    Tue, 6 Feb 2007 13:53:09 -0600
    ...Synthetic lubes can be >extended for both extremes as not only do they have better viscosity >indexes, they do not have the waxes that...
  • Re: Disappearing Coolant - Head Leak?
    Historical mailing list - Vince S
    Wed, 15 Sep 2004 17:28:00 -0700
    ...Please refer to the very good viscosity index as well as the flash point of the Mobil 1 vs other oil. http://www.vtr...
  • Re: Dodged a bullet -- blowed the oil filter right off
    Historical mailing list - Dennis Haynes
    Thu, 31 Dec 2015 15:38:22 -0500
    ...The next important factor is the viscosity index. This is how the oil changes viscosity with temperature outside this range. For cold weather operation...
  • Re: Disappearing Coolant - Head Leak?-Engine Oil Viscosity!
    Historical mailing list - Dennis Haynes
    Wed, 15 Sep 2004 21:12:24 -0400
    ...Please refer to the very good viscosity index as well as the flash point of the Mobil 1 vs other oil. http://www.vtr...
  • Re: Oil question - synthetic, 'real' oil, etc
    Historical mailing list - Dennis Haynes
    Thu, 11 Apr 2002 19:16:30 -0400
    ...The improved viscosity index allows for thinner oils and still provide protection at higher temps. I've have used Mobil 1 for years. I...
  • Re: VC fluid - take a chance on this
    Historical mailing list - neil n
    Sat, 3 Apr 2010 10:50:14 -0700
    ...but molecular weight unknown, and > correct viscosity... > > Derek Drew mentions he has a bottle of the right stuff, but was warned > against trying a...
  • Re: Motor Oil (Synthetic)
    Historical mailing list - Dennis Haynes
    Wed, 13 Jan 2010 00:13:55 -0500
    ...We need oil that could flow at the lowest prevailing temperatures yet maintain viscosity at full operating temperature. Viscosity index improvers and multi-weight...
  • Re: Dodged a bullet -- blowed the oil filter right off
    Historical mailing list - Mark Tuovinen
    Fri, 1 Jan 2016 22:03:35 -0900
    ...The next important factor is the viscosity index. This is how > the oil changes viscosity with temperature outside this range. For cold > weather operation...
  • Re: OK, Swepco gear oil..
    Historical mailing list - Marc Sayer
    Thu, 22 Apr 2010 10:25:29 -0700
    ...http://www.thesamba.com/vw/forum/archive/index.php/o-t--t-366486--.html > MT-90 is a 75W90 gear oil (viscosity about the...
  • Re: Oil question - synthetic, 'real' oil, etc
    Historical mailing list - Stan Wilder
    Thu, 11 Apr 2002 18:44:14 -0500
    ...Synthetics eliminate the carbon-varnish > problem. > The improved viscosity index allows for thinner oils and still > provide > protection at higher temps. I've have...
  • why should 10W-40 be avoided?
    Historical mailing list - pierre a. lachance
    Sun, 15 Oct 2000 18:56:22 -0400
    ...AMSOIL can formulate their 10W-30 and 15W-40 with no viscosity > index improvers but uses some in the 10W-40 and 5W-30.
  • Re: Dodged a bullet -- blowed the oil filter right off Long winded
    Historical mailing list - Dennis Haynes
    Sun, 3 Jan 2016 12:38:31 -0500
    ...The next important factor > > is the viscosity index. This is how the oil changes viscosity with > > temperature outside this range. For cold weather operation...
  • Re: Dodged a bullet -- blowed the oil filter right off
    Historical mailing list - Dave Mcneely
    Sat, 2 Jan 2016 13:15:08 -0600
    ...The next important factor is the viscosity index. This is how > > the oil changes viscosity with temperature outside this range. For cold > > weather operation...
  • Re: Dodged a bullet -- blowed the oil filter right off Long winded
    Historical mailing list - Dennis Jowell
    Sun, 3 Jan 2016 18:53:11 -0500
    ...The next important factor >>> is the viscosity index. This is how the oil changes viscosity with >>> temperature outside this range. For cold weather operation...
  • Re: Dodged a bullet -- blowed the oil filter right off Long winded
    Historical mailing list - Dennis Jowell
    Sun, 3 Jan 2016 19:30:10 -0500
    ...The next important factor >>> is the viscosity index. This is how the oil changes viscosity with >>> temperature outside this range. For cold weather operation...
  • Re: Dodged a bullet -- blowed the oil filter right off Long winded
    Historical mailing list - Dennis Haynes
    Sun, 3 Jan 2016 19:56:52 -0500
    ...The next important factor >>> is the viscosity index. This is how the oil changes viscosity with >>> temperature outside this range. For cold weather operation...
  • Re: gas prices and fuel economy ... another slant :)
    Historical mailing list - joel walker
    Fri, 27 Jun 2008 22:06:31 -0500
    ...It can be noted, by the way, that one advantage of a synthetic base stock is its requiring less viscosity-index improver than what...
  • Re: OK, Swepco gear oil..
    Historical mailing list - Scott Daniel - Turbovans
    Thu, 22 Apr 2010 12:11:32 -0700
    ...com/vw/forum/archive/index.php/o-t--t-366486--.html >> MT-90 is a 75W90 gear oil (viscosity about the same as a...
  • Re: Expected Life of a Cat Converter??
    Historical mailing list - Tom Hargrave
    Sat, 15 Jan 2011 22:51:56 -0600
    ...http://www.brownrecycling.com/reman/index.html I quoted some work for them about 6 - 7 years ago. They needed a database solution to...
  • German Trans Responds On Viscous Matters
    Historical mailing list - Derek Drew
    Fri, 24 Sep 1999 07:33:45 -0700
    ...The silicone fluid itself is almost clear, approximately the viscosity of room-temp STP. Plunging a screwdriver a couple of times into the fluid...