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Infiniti Forum: Type of gas for Infiniti Q40
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Old 11-10-2017, 04:47 PM
Mylo23ca Mylo23ca is offline
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Default Type of gas for Infiniti Q40

Does anyone know if I can use regular gas in my Q40.
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Old 11-29-2017, 04:20 PM
ethan10502 ethan10502 is offline
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From what I read and understand is that the recommended fuel is high octane 91 or better. I think the manual says of you put regular gas then just put premium on next fill up. It wont hurt your engine but performance might be lacking.
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Old 06-05-2018, 10:27 AM
jcpjcpjcp jcpjcpjcp is offline
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I have a 2003 G35 and have used mainly regular. I have had no problems. If I would hear engine knock, I would move to the next higher grade. I really not have had that problem. As stated, the performance may be less, as I believe that the the spark is made to come later to eliminate engine knock (by retarding the spark, performance is lessen in general), however, in everyday driving, I have not noticed this.
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