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The 2014 INFINITIQ50 runs on regular unleaded gasoline with 87 octanes and has a 20.0-gallon gas tank. While you have the option to use premium gas with 91 octanes, it won't provide any added benefits and will cost you more, so it's not necessary. It's crucial not to use diesel in this car under any circumstances. If you mistakenly fill the tank with diesel, do not start the car and have it towed to a mechanic immediately. Starting the engine with diesel can damage it, resulting in expensive repairs. Even if the diesel is left in the tank for just a few hours, it can harm the tank and fuel line.
The 2014 Infiniti Q50 requires premium 91 octane fuel, but in a pinch, you can use 87 octane temporarily. Just be sure not to fill the tank all the way and avoid driving aggressively by avoiding full throttle and sudden acceleration.
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