
02-07-2011, 01:07 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
Quote:
Originally Posted by patrickt
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Then I'm lost. It says "Conventional" (HR1 and HR2) and they also have a " Synthetic" (HR3 and HR4).
So, Conventional is Synthetic?
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