grade of gas required for 07 G35
#32
I don't know why people follow every thing in the manual like break in period, oil change, but when it comes to gas, they rather follow their own opinion. who know if its better or not, but I rather put premium in this car.
#33
Originally Posted by terrycs
Page 9-3 of operators manual:
FUEL RECOMMENDATION
INFINITI recommends the use of unleaded premium gasoline with an octane rating of at least 93 AKI (Anti-Knock Index) number (Research octane number 98). If unleaded premium gasoline is not available, you may use unleaded regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91), but you may notice a decrease in performance.
Most modern engines have knock sensors and can adjust (retard) the timing accordingly to prevent knocking. So in short ... no problem (IMO). As a matter of fact, I don't even have easy access in Southern Cal for anything greater than 91. There is a poll floating around in the forums where I believe most voters are using premium.
FUEL RECOMMENDATION
INFINITI recommends the use of unleaded premium gasoline with an octane rating of at least 93 AKI (Anti-Knock Index) number (Research octane number 98). If unleaded premium gasoline is not available, you may use unleaded regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91), but you may notice a decrease in performance.
Most modern engines have knock sensors and can adjust (retard) the timing accordingly to prevent knocking. So in short ... no problem (IMO). As a matter of fact, I don't even have easy access in Southern Cal for anything greater than 91. There is a poll floating around in the forums where I believe most voters are using premium.
I agree, as long as there is mention of premium in the owner's manual, better off using it. If no mention, then regular is fine.
#34
Originally Posted by rocaveli
hmm..I've always wondered this though: is it actually bad for the engine? What if you alternate between regular and premium?
Using regular gasoline causes something called knock or detonation. This can destroy an engine but fortunately cars have knock sensors on them that pull back the timing of the sparks which also reduce performance. Premium gas burns slower than regular gas which means its less likely to prematurely explode in very hot compression chambers.
Its always best to use the lowest grade gasoline you can get that will cause 0 degrees of knock. Using a higher octane gasoline than necessary can actually reduce performance.
#35
Originally Posted by KJC5050
Are you serious?? No, you don't need to switch.
He is using midgrade, not super super premium.
Originally Posted by terrycs
Page 9-3 of operators manual:
FUEL RECOMMENDATION
93 AKI (Anti-Knock Index) number (Research octane number 98). If unleaded premium gasoline is not available, you may use unleaded regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91)
FUEL RECOMMENDATION
93 AKI (Anti-Knock Index) number (Research octane number 98). If unleaded premium gasoline is not available, you may use unleaded regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91)
#39
Originally Posted by Canadian
Can we just make a huge announcement at the top of every page saying the recommended fuel is 91 octane??? I'm seriously sick of these threads...
#40
Originally Posted by Canadian
Can we just make a huge announcement at the top of every page saying the recommended fuel is 91 octane??? I'm seriously sick of these threads...
Originally Posted by GEE35X
+1, the famous I'm too cheap to use the reccommeded fuel thread If people would only read their manuals and use search
Last edited by Christian; 09-05-2007 at 11:19 AM.
#42
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One time I had an 07 loaner when I brought my 06 sedan in for service. When I first step on the gas, well it felt not much better than my 06 engine. I figured since it's a loaner so most people would just put in crappy regular gas. Thankfully the tank was near empty, so I put in as much super unlead as I could. After that the engine felt more powerful and the reving feels a lot smoother.
Anyway, just my 2cents.
Anyway, just my 2cents.
#43
Originally Posted by Virus
You will see no performance gains by using anything over 93 octane.
I always laugh when every once and a while you see some kid in a Civic putting in 93 octane thinking the "super" fuel will give you more power.
The higher the octane, the LESS combustible a fuel is. That is why it's required in high compression motors, to prevent knock and detonation (basically fuel exploding at the wrong time).
If the octane is too low, your computer reduces timing, which hurts fuel economy and power. If it's way too low, goodbye motor.
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