Originally Posted by DirtyD
You are stretching my statement IMO.
Stock is the factory parts and configuration of the vehicle as it left the factory, but doesn't include fuel, oil, coolant, etc since those are replenishable.
Oil eventually has to be changed...a tune, intake, exhaust, etc doesn't HAVE to be changed.
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I've personally switched to 0 weight oil and picked up great power. So no I'm not stretching anything.
Car is "factory" anymore once one oil change is done, according to your definition.