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Page 1: 26 results shown for Viscosity improver.

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

• Re: should 10W-40 be avoided?
  Historical mailing list - Scott De Santi
  Sun, 15 Oct 2000 17:32:54 EDT
  ...Mobil 1 uses no viscosity improvers in their 5W-30, and I assume the new 10W-30 >> Any information on the Mobil 1 15W...
• 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...
• 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: Does a worn pressure relief valve cause Oil pressure buzzer?
  Historical mailing list - G.M.Bulley
  Sat, 5 Oct 2002 16:13:42 -0400
  Motor HoneyR is the brand name of a viscosity improver sold at most FLAPS. There are other brands like Stop SmokeR or STP (blue...
• 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...
• Food that doesn't spoil <f>
  Historical mailing list - Dave Kautz
  Fri, 7 Jul 95 11:16:26 PDT
  ...they don't melt when warmed......could they be used as viscosity improvers in motor oil perhaps? Who cares how hot the oil gets...
• Re: Choice of Oil
  Historical mailing list - Dennis Haynes
  Mon, 7 Feb 2005 22:01:57 -0500
  Multi-Viscosity oils have been around since the 70's. The better one's have it right. Especially the synthetics as they do not...
• *very long* All you need to know on Synthetic oil
  Historical mailing list - Dan Houg
  Wed, 3 Apr 1996 16:32:53 CST6CDT
  ...VI improvers are designed to help an oil's viscosity/temperature performance. Remember that at high tempera- tures, an oil's viscosity drops. If...
• Re: Synthetic Oil(s) YES!
  Historical mailing list - Mark B. Magee
  Fri, 10 Oct 1997 18:25:50 -0500
  ...don't make acid as they interact with engine moisture, the viscosity improvers last much longer on the multi-vis oils. Additionally, syn oil...
• Re: Choice of Oil
  Historical mailing list - Jason Kirk
  Mon, 7 Feb 2005 19:32:09 -0800
  ...Choice of Oil > > Multi-Viscosity oils have been around since the 70's. The better one's > have it right. Especially the synthetics as...
• Re: DOn't use SM rated oils Re: Flickering Oil Light 84 auto
  Historical mailing list - Dennis Haynes
  Sun, 16 Sep 2007 09:37:47 -0400
  ...With conventional oil, the 10w-40 also represents a wide range, relying on viscosity improvers to get the rating often making for an un...
• Re: Synthetic Oil(s) YES!
  Historical mailing list - Eric Zeno
  Thu, 9 Oct 1997 22:15:54 -0400
  ...don't > make acid as they interact with engine moisture, the viscosity improvers > last much longer on the multi-vis oils. > Additionally, syn oil...
• Re: Lucas Heavy Duty Stabilizer
  Historical mailing list - Dennis Haynes
  Sun, 25 Mar 2012 10:33:27 -0400
  ...The oil stabilizer is basically a viscosity improver with some other benefits. If it is really beneficial can become another matter. My own thoughts...
• Re: Choice of Oil
  Historical mailing list - Robert Fisher
  Mon, 7 Feb 2005 19:49:18 -0800
  ...Choice of Oil >> >> Multi-Viscosity oils have been around since the 70's. The better one's >> have it right. Especially the synthetics as...
• Ed Hackett's big oil FAQ (long) Subject: New oil data
  Historical mailing list
  Thu, 14 Jul 94 8:11:24 PDT
  ...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: Choice of Oil
  Historical mailing list - Jim Felder
  Mon, 7 Feb 2005 22:02:19 -0600
  ...Choice of Oil >>> >>> Multi-Viscosity oils have been around since the 70's. The better >>> one's >>> have it right. Especially the synthetics as...
• Re: Spooked!
  Historical mailing list - David Beierl
  Sat, 4 Jun 2011 13:06:29 -0400
  ...high-temperature properties to a bunch of very-long-chain molecule viscosity improvers that degrade over time as they get sheared in the engine...
• 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: Newbie Oil Question (Facts added)(long)
  Historical mailing list - Subject: Re: Newbie Oil Question (Facts added)(long)
  2 Apr 92 19:33:31 GMT
  ...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: Make Best of Synthetic Oil?
  Historical mailing list
  Sat, 18 Sep 1993 13:27:09 GMT
  ...20W-50 is the same 30 point spread, but because it starts with a heavier base it requires less viscosity index improvers (polymers) to...
• Additives, was: Additive
  Historical mailing list - Bulley
  Mon, 8 May 2000 10:56:48 -0400
  ...MH is allegedly a "viscosity improver". Basically, just sticky, gooey oil. Since my Jetta TD has 190k+ on it, and since the Vanagon's...
• 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: Synthetic Oil(s) (long)
  Historical mailing list - Tom Brunson
  Fri, 10 Oct 1997 00:46:18 UT
  ...viscosity range from their base stock without VI (viscosity improvers) additives which tend to break down with use. Good synthetics show almost no viscosity...
• 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: Just interesting observation & More Questions
  Historical mailing list - Al and Sue Brase
  Sat, 18 Dec 2004 12:55:48 -0600
  ...Multi-vis oil starts with thin base stock and adds VI improvers to make it thicker. These break down with use and high temps...