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Old 05-18-2009, 07:11 PM   #7 (permalink)
ZforMe
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Join Date: Jan 2009
Location: Memphis TN
Posts: 238
Drives: 370Z Sport Auto PG
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Does it concern anyone that Royal Purple is not API certified? And that it's API Service is SL in lieu of SM? I'm starting to lean towards AMSOIL. Lucky for me I have 3750 miles to think about it.
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13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.
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