Some people swear they can taste the difference. Not with their mouth—with their butt dyno. They claim mixing gives more torque. Is it real? Probably just placebo. But placebos work on cars too, apparently.
There’s a legendary story about a guy who mixed E10 with race fuel and blew his exhaust. Don’t do that. Stick to regular 91. Mixing is safe; mad-scientist mixing is not.
E10 vs 91 Unleaded: The Complete Australian Fuel Comparison - Tech
And finally, your gas cap is not a chemistry lab. You don’t need to calculate ratios. Just pour both in. The tank mixes it for you. It’s like shaking a cocktail without the snazzy bartender.
When NOT To Mix
If your car is a high-performance beast with a turbo that demands 98 octane, stop. Don’t mix. You’ll get knock and sad engine noises. But for daily drivers? Go nuts.
Also, don’t store mixed fuel for months. Ethanol attracts water, which turns into sludge. Use it within a month. Think of it as a fresh salad, not a canned soup.
One more no-no: never mix E10 with diesel. That’s not a fuel blend; that’s a disaster smoothie. Your engine will cough like a cat with a furball.
