Why is it that the Spec Vs factory recommended fuel is high octane (92 octane or higher) but the Altima with the same engine the factory only recommends regular 87 octane? Is it because of different transmissions or engine tuning? Engine tuning is the same on both cars right? 175hp 180lb torque right? Or is it just a marketing gimmick? You know, Altima buyers get better fuel effeciency, Spec V buyers get more power. I ask because I am going broke from paying $1.90 per gallon for premium. If I can save money buying regular without engine knocking, well then, I will. Thanks. Peace.
Last edited by germex; Mar 8th, 2003 at 07:24 PM.