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Originally Posted by politicophile
The octane rating on gasoline indicates the gas' resistence to premature detonation, or "knocking". Your best bet is to see what your owner's manual recommends. That particular engine isn't inordinately high-tech, so I would guess the recommendation will be for 87 anyway. High test gas does nothing to increase power: its only function is to prevent highly stressed engines from knocking.  |
High octane gasoline will most definitely increase power. It's usually only at the "power band" or "peak power RPM" in engines. For example, a Dodge SRT-4 with the Stage 3 Turbo kit produces around 310 horsepower with 93 Octane gasoline, but if higher octane gasoline (over 100) is used, it boosts the horsepower to 350. Found the source:
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With regular 93 octane pump gasoline, the car puts out 310 hp and 325 lb-ft at the crankshaft, by no means old-lady numbers. Pump in 100 octane unleaded, and you'd better hold on to your potatoes as the engine pushes 355 hp and 365 lb-ft to the crank.
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