What kind of octane rating should I use?
03-21-2005, 03:55 AM
#1
Thread Starter
Join Date: Mar 2005
Location: Naperville, IL
Posts: 6
What kind of octane rating should I use?
I just got my 2000 Mustang GT (37k miles at $10k, black on black, auto). This car is a huge gas hog compared to my old car. Since I went from a 2.7l i6 to a 4.6l v8, I figured I should run premium. However, each time I fill up I dump $30 down the drain. I was wondering if I should be putting in permium (93oct) each time I fill up, or is 87 okay. I don't want to risk damaging my motor, I love this car.
03-21-2005, 03:57 AM
#2
4th Gear Member
Join Date: Dec 2004
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Posts: 1,019
RE: What kind of octane rating should I use?
87 is fine for your car, you can double check in your owner's manual, it will have the recommended octane in there. You would only need higher octane such as 91 or 93 if you get a timing adjuster and advance the timing. Until you do that stick with the 87.
03-21-2005, 08:51 AM
#5
Retired MF Moderator
Join Date: Aug 2004
Posts: 14,891
RE: What kind of octane rating should I use?
ORIGINAL: blank
87 is fine you only need premium if you have a 4 valve engine
87 is fine you only need premium if you have a 4 valve engine
03-21-2005, 11:56 AM
#6
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Join Date: Apr 2004
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RE: What kind of octane rating should I use?
ORIGINAL: blank
87 is fine you only need premium if you have a 4 valve engine
87 is fine you only need premium if you have a 4 valve engine
Or if your ignition timing is advanced past 10 degrees or if you're running a higher compression engine.
03-21-2005, 01:18 PM
#8
4th Gear Member
Join Date: Jan 2005
Location: Oklahoma City, Oklahoma
Posts: 1,519
RE: What kind of octane rating should I use?
Yeah go with what the manufacturer suggests and you will be fine. You will only have to use a higher octane when you up your timeing or if you buy a tuner and install the tune.
P.S. I would suggest getting the Predator tuner and modifing your shift points and pressure in your auto, I did in mine and love it, It grabs 2nd gear really good and chirps the tires at mid-throtle, and will smoke them if i turn off the trac-control and have it on the floor!!!!!!!
P.S. I would suggest getting the Predator tuner and modifing your shift points and pressure in your auto, I did in mine and love it, It grabs 2nd gear really good and chirps the tires at mid-throtle, and will smoke them if i turn off the trac-control and have it on the floor!!!!!!!