Originally posted by DemonSVT:
All you folks ARGUING and DEFENDING the low octane in an SVT point are MISSING the BIG POINT.

Running lower octane then the PCM is programmed for will significantly LOWER GAS MILEAGE!!!

So now you are getting less miles per tank. So much for saving that extra money because you now need to fill up more often.




Actually, my experience has been that my miles per gallon IMPROVES on 89 octane. Some of my highest miles between fill ups have been with 89. By the way, I average 24-26 mpg in mostly highway driving.

Doug 2006 Mercury Milan V6 Premier Dark Blue Pearl Former owner of a 2000 SVT Contour