Does GEN III 3.8 uses 93 premium gas grade
- Thread starter newworld2004
- Start date
earljuic3
Adventurer
"Lower octane gasoline like "regular" 87-octane gasoline can handle the least amount of compression before igniting. The compression ratio of your engine determines the octane rating of the gas you must use in the car. This is the same as saying your engine is designed to perform its best with a specific octane rating of gasoline. A "high-performance engine" has a higher compression ratio and requires higher-octane fuel to prevent it from prematurely igniting fuel before the spark plug does it."
Octane ratings are based on Science. Engineers spec fuels for use in engines. Those engineers also know that people are cheap, and gasoline quality is an unintended variable, so they add a knock sensor to save their creations from destruction. You are free to sacrifice power by using low octane fuel, and rationalize it however you like.
It's a three legged stool. Octane / compression / timing.
FWIW, I always use mid-grade (89-91) in the G3, 93 or 95 in the Marauder (aggressive tune that WILL knock on bad gas), and a mix of Everclear and battery acid in the 2001 Sport.
It's a three legged stool. Octane / compression / timing.
FWIW, I always use mid-grade (89-91) in the G3, 93 or 95 in the Marauder (aggressive tune that WILL knock on bad gas), and a mix of Everclear and battery acid in the 2001 Sport.
JohnnyBfromPeoria
I'm Getting Around To It
We're looking at a consistent $.40 spread from 87 regular to 91 premium in the Phoenix area where as of yesterday, regular is about $1.89, so that's nearly a 20% difference. It gets harder to mentally justify as the overall price decreases but the per cent spread stays high. My solution is to fill the tank after every use, as in every day if I drive more than a couple of miles. It just doesn't bother me that way. It helps that my daily round-trip commute is 3 miles, including going a little out of my way to the convenience store on the way home.
John B.
John B.
DanF.
Adventurer
Can you find ethanol-free 93 octane in Cary? I used to run it all the time when I lived in Wilmington. Made a slight, but perceptible difference in my mildly-tuned turbo Saab.
Here in Galveston, TX the price of 87 octane is about $1.57, and 93 octane just dipped below $2.00/gal. Combined with my fuel savings card from the grocery store, I can get super cheap 93 (all I've ever put into my BMW, except that one time in New Mexico....) and am loving this. You can see the huge backup of oil tankers off the coast, and it looks like a floating city out there at night.
When I was living in Cary there used to be a corner shop (Kildaire & Maynard) that sold 103. Ran that in my turbo'd Miata when I had the boost dialed up.
I'm running premium in my '06, but I've yet to test it with lower grade (I haven't driven it enough to go through more than a few tanks). My '02 3.5 would ping under hard acceleration on 87 so I only ran premium (91).
TerrenceLP
Observer
Well there you have it - The Fuel pricing system is a joke - Pull a number out of a hat!
Cost vs Quality.
Some of these reasons are too funny - It's like saying I only eat frozen food because it's cheaper - missing the whole point of Healthy Eating and in the long run doing more damaged than if spending a wee bit more to do it right.
BTW - I called Mr. Mitsubishi - he said High Octane only! - No Not really lol~
Cost vs Quality.
Some of these reasons are too funny - It's like saying I only eat frozen food because it's cheaper - missing the whole point of Healthy Eating and in the long run doing more damaged than if spending a wee bit more to do it right.
BTW - I called Mr. Mitsubishi - he said High Octane only! - No Not really lol~