Question Regarding Fuel
Thread Starter
Joined: Feb 2008
Posts: 44
From: Texas
Question Regarding Fuel
I've got a new '08 GT with manual trans. The manual says that the engine is designed to run on 87 octane fuel. My question is whether the use of either 89 or 93 octane fuel will cause any problems with regard to the computer programming. Will the computer adjust the ignition lead and or advance to take advantageof the slower burn rates of higher octane fuels, or will the computer not react at all to the change?
6th Gear Member
Joined: Jun 2007
Posts: 16,182
From: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
RE: Question Regarding Fuel
The stock tune is designed for 87 octane. Anything higher is a waste of $$. Plus, there's been some debate regarding detrimental effects of running higher octane on the stock tune. Use the search feature as this has been discussed over and over and over.
6th Gear Member
Joined: Feb 2007
Posts: 7,635
From: state of confusion
RE: Question Regarding Fuel
The only reason that I can think of for running 91 or 93 octane in an unmodified engine is if you're getting ready to install a tune for the higher octane and don't want to be caught with any 87 in the tank. 89 octane isn't going to cut it for any of the premium-fuel tunes, and probably won't help a bone-stock engine much either.
Norm
(using 91 octane in preparation for upcoming CAK/tune)
Norm
(using 91 octane in preparation for upcoming CAK/tune)
3rd Gear Member
Joined: Jan 2005
Posts: 701
From: New Bern, NC
RE: Question Regarding Fuel
ORIGINAL: GidyupGo
I run a tank of 91 (Highest here in my town) from Shell every other month or so the get the benefits of the higher detergent.
I run a tank of 91 (Highest here in my town) from Shell every other month or so the get the benefits of the higher detergent.
That being said, Red Line is not common at all in North Carolina, now using about 6 ounces of Lucas Oil fuel treatment in a tank starting only recently. I'm here to tell you stuff is GREAT! Throttle response is much improved, and hard acceleration has improved also, tires attempting to break traction through 2nd gear, with traction control on, and I'm not one of the "burn out" fans, just hard acceleration is breaking them lose.
5th Gear Member
Joined: Apr 2007
Posts: 3,547
From: The High Country
RE: Question Regarding Fuel
ORIGINAL: algregory
I lived in California till a year ago. All my "rides" use regular, using premium is a waste of money. I was a rabid believer in Red Line Oil products, every time I filled up my modified BMW for twenty years I'd put a smidgen of Red Line Fuel treatment in the tank. After 29 years and 269k miles I was still blessed with three out of four original injectors, and my fuel lines clear and see through from the factory were still clear and see through.
That being said, Red Line is not common at all in North Carolina, now using about 6 ounces of Lucas Oil fuel treatment in a tank starting only recently. I'm here to tell you stuff is GREAT! Throttle response is much improved, and hard acceleration has improved also, tires attempting to break traction through 2nd gear, with traction control on, and I'm not one of the "burn out" fans, just hard acceleration is breaking them lose.
ORIGINAL: GidyupGo
I run a tank of 91 (Highest here in my town) from Shell every other month or so the get the benefits of the higher detergent.
I run a tank of 91 (Highest here in my town) from Shell every other month or so the get the benefits of the higher detergent.
That being said, Red Line is not common at all in North Carolina, now using about 6 ounces of Lucas Oil fuel treatment in a tank starting only recently. I'm here to tell you stuff is GREAT! Throttle response is much improved, and hard acceleration has improved also, tires attempting to break traction through 2nd gear, with traction control on, and I'm not one of the "burn out" fans, just hard acceleration is breaking them lose.
Shell's premo gas has 5 times the cleaning agents as what the feds mandate. It'll keep things clean, and will clean up junk already there. Or so they say.
Thread
Thread Starter
Forum
Replies
Last Post