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Discussion Starter · #1 ·
I don't own a Titan, I own a 2008 Pathfinder V8. I think it's got the same engine as the Titan.

The book isn't exactly clear about what fuel I should use. They use two different measurements in the book, but the numbers are kinda close to one another so I'm not sure what to go by - I live in the US.

I *think* it says I should not use fuel under 91 octane. But does that mean I SHOULD try to use 93? Or that it's perfectly tuned for 91? Or what?

The dealership seems just as clueless as I am. (which is pretty bad..)
 

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You could use whatever octane you prefer. I've run 87 and I've run 93. I mostly use 93 octane because I'm advanced 2* just for piece of mind. My '05 Maxima says "premium recommended for maximum performance" so that also tells me that octane rating is for personal preference as I could run 87 and not have "maximum" performance.
 

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Run either. I run 93 when I'm towing, but otherwise it's straight 87.
 

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Discussion Starter · #4 · (Edited)
Well that's good to know. My last car had a Northstar V8 and if I didn't run on 93 octane it would ping like crazy. It could have potentially damaged the motor I suppose (pinging, as I understand it, is cause by the piston "shaking" since the lower octane fuel explodes before the piston is at the top of the stroke.)

But if this engine doesn't have issue with 87, that's great.

PS. I notice you have installed the QX56 steering wheel on your rig, how much did that set you back? Just curious. I'd love to have a wood steering wheel again.
 

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cbreaker said:
I *think* it says I should not use fuel under 91 octane. But does that mean I SHOULD try to use 93? Or that it's perfectly tuned for 91? Or what?
If it call for at least 91, anything over will not hurt. Here in Houston you can't find 91 only 87, 89 or 93.
 

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I usually always run 87. But occasionally run some 93 through her to let her burn a little better... :werd:
 

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I run 86 here in NM. I've had no problems.
 

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I run 103 from the pumps at the track and put some of that Outlaw octane booster in the tank............two bottles!! You should feel the power!! :werd:
 

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I have used 91 only three times the first two seemed to improve my MPG. The third time I filled up at a diamond shamrock and I only got two hundred miles out of a full tank.
 
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