"Octane Boosters" for VQ37 Motor

RoshDawg · 02-18-2013, 11:18 PM

Quote:

Originally Posted by DEpointfive0

... Toluene is 103 AKI. AKI, is what the US standard is for gas. (What you see on the pump)

So using that info, your calculation is a bit off...
And in CA you can't buy Toluene actually (just saw the OP is in CA)

I used to use Toluene a LOT back in the day, so I've done all the calculations and figures... I HAD an excel sheet too, but I recently deleted it because it's just not worth the cost...

And about the need to add lubricants, you don't need to add any if you use Toluene, but you'd need to use something like Marvel Mystery Oil if you used Xylene

Ohh crap sorry. I was mixing up RON with AKI

alcheng · 02-19-2013, 12:45 AM

Quote:

Originally Posted by kenwood

I have a new 2013 370Z with a totally unmodified (so far) VQ37 motor. The "91 Octane" engine performance seems to vary by oil company. Chevron has been OK so far. No pinging, just not enough grunt. In any event, I have tried Lucas "3X Octane Booster", STP Octane Booster and "Super 104". Does anyone have an opinion on getting the most out of the the stock motor via fuel additives or are all of the after market "Octane Boosters" just boosting us with snake oil?

Engine are design and tuned for certain spec/octane-value. For a normal OEM spec engine you won't get any difference between 91 or 94 since they are tuned for 91.

If you put 89 or 87, that you will lose hp and fuel-economy, and it give stinky exhaust.

I tried 87, 89, 91 and 94 before, not with the Z but my previous cars.

And I am sticking with 91 since I see no difference on performance and fuel-economy between 91 and 94.

Quote:

Originally Posted by kenwood

5th Gear - Myth about fuel additives - YouTube

You found yourself the answer

Now you can save those money and buy yourself a beer <== a liquid that your money well spent on

DEpointfive0 · 02-19-2013, 01:17 AM

[QUOTE=alcheng;2172986]Engine are design and tuned for certain spec/octane-value. For a normal OEM spec engine you won't get any difference between 91 or 94 since they are tuned for 91./QUOTE]

I disagree with this point.
The car will advance timing, and adjust per current conditions... (Like anything else, intakes, exhausts etc.)

alcheng · 02-19-2013, 02:07 AM

Quote:

Originally Posted by DEpointfive0

Quote:

Originally Posted by alcheng

Engine are design and tuned for certain spec/octane-value. For a normal OEM spec engine you won't get any difference between 91 or 94 since they are tuned for 91.

I disagree with this point.
The car will advance timing, and adjust per current conditions... (Like anything else, intakes, exhausts etc.)

Unless you tuned it and it requires 94, otherwise if the drivers manual says 91, 91 is as good as 94.

I tried both on the same car... no difference...

02-19-2013, 01:17 AM	#3 (permalink)
DEpointfive0 A True Z Fanatic Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17153	[QUOTE=alcheng;2172986]Engine are design and tuned for certain spec/octane-value. For a normal OEM spec engine you won't get any difference between 91 or 94 since they are tuned for 91./QUOTE] I disagree with this point. The car will advance timing, and adjust per current conditions... (Like anything else, intakes, exhausts etc.) __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

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