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I race stock drag 12 years. Castrol was the highest rated at that time. This is the first car that I did not use Castrol in. The Castrol did show better than the other brands for lowest internal deposits and rapid seating of pistons and valves. If you want to change look at the racing divisions the three that stand out. Mobil 1, Castrol syn. and Royal purple the new up and comer. Their primary concerns are reduced friction @ high temp and high RPM. Unless the team has a oil sponsership they are using one of these.
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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