Nissan 370z fuel: 100, 98, 95 octane?

Horsie · 09-14-2011, 03:44 AM

So, on my fuel cap (European version) I have: 98 octane petrol!

Problem: in my contry I have only 95 octane (regular) and 100, 100+ octane (no 98).
The price difference between 95 and 100 is almost 10%.

What would happen if I use 95 octane?

DLSTR · 09-14-2011, 05:13 AM

The ECU will modulate for the given fuel type. No worries. I use 98 or 102 here in Germany. Drive on and have fun. You wont really notice a difference in performance. The recommended fuel gives you optimal performance. The car will still run ok with 95.

Chan Chee Hoe · 09-14-2011, 06:40 AM

Put 100 octane will give better performance,too bad my country only got 98 octane.

bvl · 09-14-2011, 06:57 AM

Quote:

Originally Posted by Horsie

So, on my fuel cap (European version) I have: 98 octane petrol!

Problem: in my contry I have only 95 octane (regular) and 100, 100+ octane (no 98).
The price difference between 95 and 100 is almost 10%.

What would happen if I use 95 octane?

The knock sensor will detect the lower octane fuel and retard ignition timing (and possibly increase fuel a tad). While car will run/adjust, you will lose power and potentially a bit of MPG/KPL.

You have a high performance engine: the 10% fuel premium should not be financially strapping: if it is you got the wrong car.

Give the car the fuel it was designed to run with.

- b

Fastfatdude · 09-14-2011, 12:46 PM

technically speaking a higher octane will not give you better performance unless you run a very aggressive ECU setting or engine is heavily modded (very high lift/ very long duration) and much higher compression ratios.

But then, you will need racegas, 100oct will definitely not be enough for such applications.

Quote:

Originally Posted by Chan Chee Hoe

Put 100 octane will give better performance,too bad my country only got 98 octane.

oleg · 09-16-2011, 01:34 PM

What's the highest octane rating that the motor on the can handle?

09-14-2011, 03:44 AM	#1 (permalink)
Horsie Base Member Join Date: Aug 2010 Location: Romania Posts: 47 Drives: Nissan 370z Rep Power: 14	Nissan 370z fuel: 100, 98, 95 octane? So, on my fuel cap (European version) I have: 98 octane petrol! Problem: in my contry I have only 95 octane (regular) and 100, 100+ octane (no 98). The price difference between 95 and 100 is almost 10%. What would happen if I use 95 octane? __________________ Nissan 370z Roadster (black) aKa Batmobil...

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09-14-2011, 05:13 AM	#2 (permalink)
DLSTR A True Z Fanatic Join Date: May 2011 Location: Süd Germany Posts: 2,462 Drives: 21Supra 2.0/22 M240i Rep Power: 21266	The ECU will modulate for the given fuel type. No worries. I use 98 or 102 here in Germany. Drive on and have fun. You wont really notice a difference in performance. The recommended fuel gives you optimal performance. The car will still run ok with 95.

09-14-2011, 06:40 AM	#3 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 17	Put 100 octane will give better performance,too bad my country only got 98 octane.

09-16-2011, 01:34 PM	#6 (permalink)
oleg Enthusiast Member Join Date: Dec 2010 Location: Illinois Posts: 321 Drives: 2011 370z 6mt sp Rep Power: 14	What's the highest octane rating that the motor on the can handle?