Originally Posted by LEADFOOT
I have access to 125 octane fuel at a local gas station. The owner races and offers the fuel to the general public at one of his pumps. I know of a few friends that have used the fuel in their motorcycles and have not had any problems. I am tempted to try it on my SRT-6 but have never tried it on a mostly stock vehicle before. Has anyone tried this before with our cars? How much hp gain would you expect? This will be a great increase in hp if I don't blow up the engine first (lol).
Leadfoot
Does the 125 Octane rating use the (R+M)/2 method? or RON or MON?
Here is a link that provides a good tutorial.
http://www.idavette.net/hib/fuel/index.htm
Search the internet for octane blending charts - there are several out there for blending Rocket 100 Octane gas with regular and premium gas.
I would not put 125 Octane in my SRT-6 but I would fill up with 100 Octane.
Maybe the owner will help you find the proper blend.