Viscosity index

Engine and fuel systems#oil#lubrication#engine

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Machine-assisted source-grounded glossary draft. Human review still needed.

Une mesure de la résistance d'un huile aux changements de viscosité en raison des fluctuations de température.

Machine-assisted source-grounded glossary draft. Human review still needed.

A measure of an oil's resistance to changes in viscosity due to temperature fluctuations.

Related mailing-list messages and current discussions from Gerry. These are community context for the dictionary term.

Re: vanagon Digest - 5 Feb 2007 to 6 Feb 2007 - Special issue (#2007-165)
Historical mailing list · 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 · 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 · 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...

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