Pontiac Solstice Forum - View Single Post - Oops! Accidentally put 87 octane in my GXP.

Remember, the owner's manual says 87 octane is okay, but 91 is recommended for optimum performance.

So the car's ECM should be able to compensate for any knocking caused by the 87 otcane. But it may take a few tanks of premium for it to readjust back to the higher performing settings.

I'm sure one tankful won't cause any permanent damage, just a possible small drop in performance until you run enough premium through it.

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GXP, Sly w/ Black Leather Interior, Loaded

Purchased off the lot on 6/30/2007 from dealer stock to replace My Baby, lost on the Tail of the Dragon on 6/25/2007. You can read all about it here, Tail of the Dragon - Accident

Email me if you are interested in joining the Mid-Atlantic Solstice Sky Club (MASSC) for NJ, NY, PA, DE and MDdscheneck@msn.com

Red Bull Drift Team 2008

	dengel Founding Member Join Date: Feb 2005 Location: Northwest NJ	Remember, the owner's manual says 87 octane is okay, but 91 is recommended for optimum performance. So the car's ECM should be able to compensate for any knocking caused by the 87 otcane. But it may take a few tanks of premium for it to readjust back to the higher performing settings. I'm sure one tankful won't cause any permanent damage, just a possible small drop in performance until you run enough premium through it. __________________ GXP, Sly w/ Black Leather Interior, Loaded Purchased off the lot on 6/30/2007 from dealer stock to replace My Baby, lost on the Tail of the Dragon on 6/25/2007. You can read all about it here, Tail of the Dragon - Accident Email me if you are interested in joining the Mid-Atlantic Solstice Sky Club (MASSC) for NJ, NY, PA, DE and MDdscheneck@msn.com Red Bull Drift Team 2008