Using a higher octane than necessary If you opt for a higher octane than your manual recommends—say, 89 instead of 87—your car will be perfectly fine, an article on AAMCO’s blog explains. It will not, however, improve your car’s mileage or give it any sort of extra performance boost, according to Car Talk.
Q. Can I put 89 octane in my Infiniti?
Can I put 89 gas in my Infiniti? It will be fine, the cars computer will compensate for the lower octane , but it will run much better with Premium octane .
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Q. What kind of gas does Infiniti fx45 take?
INFINITI recommends using 91 octane premium unleaded gasoline for desired performance and horsepower. Your INFINITI engine needs high-octane gasoline to function as it was designed for premium performance, so treat it with the proper fuel anytime you’re at the pump.
Q. Can I use 89 octane instead 91?
Most states carry 91 oct or 93 oct not both. You’ll get better MPG with higher octane anyway, so you might as well use it. But using 89 (or even 87) won’t harm the car mechanically, it can detune itself to match the octane.
Q. Does 89 octane make a difference?
Raising the octane rating (also known as the anti-knock index) doesn’t change the energy content of a gallon of gasoline. A higher octane rating indicates greater resistance to knock, the early combustion of the fuel-air mixture that causes cylinder pressure to spike.
Q. Does 89 octane have ethanol?
Premium gas doesn’t provide any more power or contain better additives than regular gas, and it contains the same amount of ethanol as other grades. It just resists detonation (knock) better than lower-octane gas—nothing more, nothing less. If so, keep using 89-octane to regain some power and save your engine.
Q. Will premium gas clean my engine?
Today’s premium fuels contain additives and detergents that help clean fuel injectors and remove carbon deposits inside of engines, thus, incentivizing motorist with engines that use regular fuel to, on occasion, use premium gas to clean their engines.
