Mixing Sunoco SS 100 to 91 Octane-Any Negatives Besides Price?

Sunoco Race Fuels
It’s safe. You can run it in just about anything. Unleaded so it won’t harm cats or o2 sensors. Usually if it’s available at a pump in California it’s safe for whatever vehicle you put it in.

At street gas stations, yes. At the pump at race tracks, no.

When I lived in the Bay Area and worked at Sonoma / Sears Point raceway, my 03 Kawi ZX6R 636 was tuned for 96 as it was cheaper than the 91 off the street. Now I have to mix gas to bring the octane up..