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

Don't put octane booster in the tank..(not recommended)

Just get to a half a tank and fill it up with high test gas..

You'll be fine.. I would suggest that you probably set the octane ratings in the pcm to low octane rating... and lost about 10 hp till the next time you fill up.

We've all done something similiar at one time or another..

Todays electronics are excellent.. they protect these engines in microseconds.. and readjust when the correct fuel is put into the tank..

Just don't look for those 10 extra ponies till you go back to full tanks of high test gas..

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2008 Blk Corvette Z51 w/NPP and 2008 Silver AWD 304hp FE2 CTS

	JBsZ06 Founding Member Join Date: Jul 2004	Don't put octane booster in the tank..(not recommended) Just get to a half a tank and fill it up with high test gas.. You'll be fine.. I would suggest that you probably set the octane ratings in the pcm to low octane rating... and lost about 10 hp till the next time you fill up. We've all done something similiar at one time or another.. Todays electronics are excellent.. they protect these engines in microseconds.. and readjust when the correct fuel is put into the tank.. Just don't look for those 10 extra ponies till you go back to full tanks of high test gas.. __________________ 2008 Blk Corvette Z51 w/NPP and 2008 Silver AWD 304hp FE2 CTS