05-07-2006, 09:20 AM
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CC Member
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Join Date: Jul 2000
Location: Shreveport,
LA
Cobra Make, Engine: CSX4083, NOS 427 SOHC, serial number 589. Dyno'd in 1967 at 629HP with single 4v 560 Holley. Now with 4 Webers.
Posts: 295
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Not Ranked
My current favorite is Royal Purple oil. I use the Racing #21. They have a chart to help pick the correct grade:
http://www.royalpurple.com/techa/whichoil.html
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