89 Octane works

blueskys · 12-31-2004, 08:16 PM

I have been running my Titan on mid grade fuel since I bought it. One fillup, I used 91 octane just to compare. I did not notice an appreciable difference in preformance at all. Has this been the case for most of you?

lizardking · 12-31-2004, 08:18 PM

89 is all I run anymore. It's the best all round octane level where I'm at. Now the Maxima runs on 93 and thats all I put in her..

gftitan04 · 12-31-2004, 08:25 PM

I live in the city and have not done much of any mountain driving or hardcore 4x4'ng. I have tried both 87 & 89 and have not noticed any difference with normal day to day driving.

Half Shovel · 12-31-2004, 09:33 PM

here we go again

*Squid* · 12-31-2004, 10:00 PM

Quote:

Originally Posted by Half Shovel

here we go again

Spoiled Sport!

*admorris* · 01-01-2005, 05:17 AM

If the owners manual calls for 87, then use 87...anything higher is a complete waste of money. The manufacturers design these engines to use what's in the manual and you will get no performance difference using higher octane. The ONLY time you may need to put 91 or 93 in the engine is if you are towing heavy and you begin to hear knocking, then you may want to jump up.

Half Shovel · 01-01-2005, 07:29 AM

Careful Admorris, the last time I said that, I got chewed out...lol!

Sorry you guys, I just have to make light of octane threads at this point, cuz there have been so many!

HS

*Titan_TX* · 01-01-2005, 09:39 AM

Quote:

Originally Posted by admorris

If the owners manual calls for 87, then use 87...anything higher is a complete waste of money. The manufacturers design these engines to use what's in the manual and you will get no performance difference using higher octane. The ONLY time you may need to put 91 or 93 in the engine is if you are towing heavy and you begin to hear knocking, then you may want to jump up.

The owners manual says it recommends 91+ octane, but 87 will work. The G35 is the same way, so are most other Nissans. I have seen as much as 20-30 hp difference in octane on a Nissan because of the octane. The computer runs better with higher octane so you get the most power. I decided to run 87 in my 01 Maxima once. I ran a 14.8 at 94.6 mph with it bone stock and 93 octane. Ran with 87, and didn't break 15.5.

IAH Titan · 01-01-2005, 09:40 AM

TX,

you confused me - where does it say that Nissan recommends 93 oct.?

*Titan_TX* · 01-01-2005, 09:58 AM

Quote:

Originally Posted by IAH Titan

TX,

you confused me - where does it say that Nissan recommends 93 oct.?

I don't have it in front of me at this time, but in the manual it said it recommends 91+ octane for best performance. But 87 will work as well. I meant to say 91+ not 93+.

*Titan_TX* · 01-01-2005, 10:03 AM

I apoligize. I must have been thinking of my G35 manual. I read the owners manual now online, and it shows 87 with no recommendation. But I have owned Nissans since 96. And tell you what, they like 93+.

SUBTITAN · 01-01-2005, 10:06 AM

Not to start this discussion over again for the umpteenth time, but my owners manual recommends 87 octane 85 if you live in higher elevations.

Bill_n · 01-01-2005, 10:35 AM

The '05 Owner's Manual says "at least 87 octane" ... but then ... in parantheses it says (Research Index 91+) and I suspect that this is the source of the confusion ....

IAH Titan · 01-01-2005, 11:20 AM

Thanks for the responses TX!!

nicks56 · 01-01-2005, 11:22 AM

Just mentioning, from my experience with my titan, there is a noticeable difference in the powerband with 93 octane (BP). I used 87 octane (BP) initially and the truck ran fine, but felt at certain RPM's to lag a bit. I used this for about 2000 miles. I then started using 93 octane (as gas prices dropped). I've been doing this for roughly 1500 miles now and the truck runs better. Don't get me wrong, I don't think the horsepower has increased tremendously, but the truck runs smoother (better) throughout the rpm range. If you drive your truck daily, maybe use the 87 to save some $. But if you drive a car during the day, and use the truck for play, why not use the 93? Your talking another $2 per fillup. If you're saying 93 does nothing, try a few fillups, you are mistaken. I also noticed an average of 1.0 mpg increase with 93. To each there own, though, use 87 if you want, use 89 if you want, or 93. Peace.