US: What kind of gas to use in Q50?

I only use a min of 91 octane ... The 89 octane cause the VQ to knock ...

Here's FUEL INFORMATION for Q50 from Infiniti
Use unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock
Index) number (Research octane number 96).
If premium gasoline is not available, unleaded regular gasoline with an octane
rating of 87 AKI number (Research octane number 91) may be temporarily used, but
only under the following precautions:
. Have the fuel tank filled only partially with unleaded regular gasoline, and fill
up with unleaded premium gasoline as soon as possible.
. Avoid full throttle driving and abrupt acceleration.
Use unleaded premium gasoline for maximum vehicle performance.

The dealer told me I could use regular unleaded!

cvipgo has the info ryt there! I read it a while ago and it definitely helps with gasoline costs along with the 28city and 34hwy mpg numbers!

Q50Aggie said:

The dealer told me I could use regular unleaded!

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What!! I'm pretty sure that if it's discovered you've been pumping regular unleaded into your tank, any warranty claims could (and likely would) be denied. Not to mention engine knocking. It clearly states on the tank cap as well to "Use Premium Unleaded Only".


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Q50Aggie said:

The dealer told me I could use regular unleaded!

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Always follow the owners manual. Not what some idiot salesperson tells you.

I'm pretty sure its 91 or up.

Someone correct me wrong if I'm wrong....

Not a good idea to put in 87 or 89 if that engine was designed to run on 91

2 things to not cheap out on a VQ

1. gas
2. engine oil

Q50Aggie said:

The dealer told me I could use regular unleaded!

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The homeless guy that lives under the bridge down the street told me I could use regular unleaded so that is what I am going to do. I'm sure he knows more than the engineers at Infiniti do!

I also try to fill up gasoline with the least amount of ethanol.

cfrp said:

I also try to fill up gasoline with the least amount of ethanol.

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D you know which brands have sell the least amount of ethanol?

pwguy said:

The homeless guy that lives under the bridge down the street told me I could use regular unleaded so that is what I am going to do. I'm sure he knows more than the engineers at Infiniti do!

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Get it writing so you can sue him later in case your car get funky

Gandhi said:

D you know which brands have sell the least amount of ethanol?

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depends on your area.

Chevron and Shell are both that I know of.

My Maxima and FX35 both say premium recommended but don't say needed is it bad that I've been using Octane 89?

89 is optional but if you want it to run best use 91 or better. Octane keeps knocking down.

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the lower octane gasolines are usually not as clean. Less cleaning agents and more ethanol.

This week I saw a 100% gasoline pump at Shell. Anyone know if that is just another "best" option for cars that take Premium or for something else??

91 octane plus with no ethanol is the best you can get. Here in Texas we get 93 at most pumps but in metroplex areas they made a deal with the devil so we can't even buy 100% gasoline.

Q50 Hybrid is looking better as the oil prices start to inch up..

agreed. hybrids are the way of the future. as electric motors continue to advance they will become more helpful to the gasoline motors.

Looking at many of the future supercars they are moving to turbochargers and electric motors. The age of V12s and V10s is slowly coming to an end.