Thread: Is everyone using 91 octane?
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Old 05-10-2008, 04:56 PM
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DaveC DaveC is offline
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Location: Blackstone, MA
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Quote:
Originally Posted by tulsalfa View Post
I ran one tank of 87 octane gas (by mistake) through my 86 Grad with no noticeable effect. I do add a bit of Lucas Gas Treatment with each tank. Has anyone had any experience with running less than 91 octane gasoline? Will the computer reset for the lower grade? Am I causing some unseen damage by running 87 octane either4 sporadically or even constantly? Any advice would be MOST appreciated.

Dean
If your engine is stock, (9:1 Compression), 87 octane (PON Rating) is what you should be using all the time. There is no benefit to using a higher octane other than wasting your money.

Dave
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