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Help 87 octane used with e-force

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Old Sep 13, 2015 | 12:10 AM
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Default Help 87 octane used with e-force

Found out that Chevron mistakenly used 87 octane in the 94 pumps. Tank was near empty before filling, and I ran the car for about 25 miles (not too hard) without any noticeable issue before I saw the news that night of the mix up. I have a 2010 Grandsport LS3 with the E-Force 1590 (554 hp).

Questions:
1) what are the chances of damage to the engine?
2) would this show up immediately, or later in life?
3) to properly drain, I assume I should drop the tanks to properly empty (Chevron will be paying for the tow to GM dealership and tanks to be drained)
4) any other advice/thoughts?

Thanks!
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Old Sep 13, 2015 | 12:13 AM
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St. Jude Donor '15
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Not going to hurt anything outside of boost pretty much regardless

Just drive it easy, run the tank out and refill. Throw some torco in the current tank and next it you want to be sure the octane is high enough.
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Old Sep 13, 2015 | 12:18 AM
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Pull the fuse for the pump, get an on/off fuse, pull the fuel hose, empty the tank, replace the stock fuse. Takes 10 minutes. Or just run the car like normal out of boost.
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Old Sep 13, 2015 | 09:00 AM
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Or just enjoy it and stay out of boost. Car is setup to run anything from 87-93, and same with aftermarket tunes. I wouldn't even hassle with a tow truck, dealer, because the risk of them causing damage is much much much higher than you just driving it easy for a tank.
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Old Sep 13, 2015 | 02:25 PM
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yeah, just don't floor it and run the tank down to empty and then refill, car will be fine.
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Old Sep 14, 2015 | 10:41 AM
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Originally Posted by neverstop
yeah, just don't floor it and run the tank down to empty and then refill, car will be fine.
I would drive it easy until the tank is 1/2 full then top it off with 93 and drive that full tank easy until you can fill up with 93/94
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Old Sep 14, 2015 | 05:21 PM
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it's fine as long as you drive it without going under a hard load (otherwise substantially increased risk of detonation)

If you understand what octane means, you'd know this already. Google it.
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