I currently have a Sunoco 100 octane, and Gulf Mach 116 race tune. I'm looking for a safe substitute for both. It's my understanding that the Stoichiometric value of the fuel is the most important thing. I don't want to lean the car out. Obviously finding fuels that have equal stioch would be ideal, but I'd like to know which way, up or down would be safe?
The Stoich on the Sunoco is 14.1.
Gulf states the Mach 116 has a range of 14.77 to 15.
locally I can get VP and Sunoco, but oddly enough, I can't get the Sunoco 100
The Stoich on the Sunoco is 14.1.
Gulf states the Mach 116 has a range of 14.77 to 15.
locally I can get VP and Sunoco, but oddly enough, I can't get the Sunoco 100