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08-02-2002, 04:32 PM
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#3 |
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dude5l
Join Date: May 2001
Location: Grande Prairie, Alberta, Canada
Posts: 603
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The W after the first # is the "winter" weight, which is the viscosity of the oil in colder temps (there is a certain temperature they use as a benchmark, but I forget what it is). The second # is the "hot " weight, which is what the viscosity is at higher temps. Viscosity simply means "resistance to flow" and the higher the #, the thicker the oil. Two #'s together (10w-40) means a multi-grade oil. A single# (50w) is a straight grade oil which means its viscosity does not change when hot.
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Good luck! Brad R. 1992 L.X. 5.0 coupe MODS: A few little bolt ons  New Best time ...11.60 @ 128 mph @ 2000+ ft altitude. Rice Haters Club member #39 Users rides #2542 |
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