93 octane worth it?

KillerBee370 · 01-30-2010, 06:04 PM

Quote:

Originally Posted by ZzzZz

Fill up my Z with 91 or 93 but don't let me know.

$1000 says I can tell you the difference.

The BlueMax · 01-30-2010, 09:01 PM

I'm only on my second tank and I put 89 octane in it because some guy who worked as a fuel delivery driver told me that there wasn't really any difference in the plus vs. premium, but some difference in 87 standard. I don't think I have noticed anything yet, but the car's pcm would take the timming down to compensate. You don't notice it as much in a GM LT1 350 V8 as much as you will in the Nissan 3.7 V6. I'm still experimenting.

ChrisSlicks · 01-30-2010, 09:49 PM

Quote:

Originally Posted by bluemax

I'm only on my second tank and I put 89 octane in it because some guy who worked as a fuel delivery driver told me that there wasn't really any difference in the plus vs. premium, but some difference in 87 standard. I don't think I have noticed anything yet, but the car's pcm would take the timming down to compensate. You don't notice it as much in a GM LT1 350 V8 as much as you will in the Nissan 3.7 V6. I'm still experimenting.

89 is not recommended for continuous use given the high compression ratio that the 370 uses. Your fuel guy was correct in terms of additives, but you need a minimum of 91 to keep this engine happy. All my American cars are built for 87 so that's what I use.

1slow370 · 01-31-2010, 02:00 AM

Quote:

Originally Posted by ChrisSlicks

89 is not recommended for continuous use given the high compression ratio that the 370 uses. Your fuel guy was correct in terms of additives, but you need a minimum of 91 to keep this engine happy. All my American cars are built for 87 so that's what I use.

True that use what it says on the cap when in doubt.

01-30-2010, 09:01 PM	#2 (permalink)
The BlueMax Enthusiast Member Join Date: Jan 2010 Location: Louisville Posts: 337 Drives: 09 370/97 T/A 01 ZRX Rep Power: 27	Still Investigating I'm only on my second tank and I put 89 octane in it because some guy who worked as a fuel delivery driver told me that there wasn't really any difference in the plus vs. premium, but some difference in 87 standard. I don't think I have noticed anything yet, but the car's pcm would take the timming down to compensate. You don't notice it as much in a GM LT1 350 V8 as much as you will in the Nissan 3.7 V6. I'm still experimenting.

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