87 Octane?
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Joined: Apr 2005
Posts: 1,165
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From: Valdosta, GA
Car: 1991 Trans Am GTA
Engine: L98(5.7 L TPI)
Transmission: 700r4(A4)
Axle/Gears: G80 RPO, 3:23s, Auburn Racer's Diff
87 Octane?
So I accidentally put 13ish gallons of 87 octane into my 1991 L98. It's supposed to take premium fuel only. Should I just burn it off, or will I foul the engine and/or cause knocking?
I purchased some octane booster, but I should have added it to the tank BEFORE filling it up (so it mixes well, I guess). The other thing is that the octane booster doesn't give me a formula of how much I should add to the tank to achieve my desired octane rating. It just says "treats up to XX gallons."
I purchased some octane booster, but I should have added it to the tank BEFORE filling it up (so it mixes well, I guess). The other thing is that the octane booster doesn't give me a formula of how much I should add to the tank to achieve my desired octane rating. It just says "treats up to XX gallons."
Joined: Oct 2013
Posts: 2,617
Likes: 159
From: Louisville, KY
Car: 1983 Z28
Engine: 385 Fastburn
Transmission: T-5
Axle/Gears: BorgWarner 9-bolt posi, 3.27 gears
Re: 87 Octane?
I agree, just burn it off. Car's made to run on premium will run on the cheaper stuff, they just aren't as happy about doing it. A bottle of 104 octane boost would help.
Joined: Apr 2000
Posts: 3,938
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From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 87 Octane?
Really...Did I just read that? Just drive the car and don't worry about it. If you would of put Diesel in it, you'd have a problem.
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Joined: Oct 2004
Posts: 4,528
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: 87 Octane?
Burn it off, if it really bothers you toss a bottle of octane booster in it
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