Here’s the nerdy-but-fun bit: octane isn’t a measure of “power” or “energy.” It’s a measure of how much the fuel resists detonating before the spark plug says “go.” Higher octane means it’s harder to accidentally ignite, like a very disciplined firecracker that waits for the signal.
Your 95 octane car’s engine computer is a tiny, anxious genius that adjusts everything in real time. If you pour in 98, the computer thinks, “Whoa, fancy pants fuel!” and tweaks the timing a bit to compensate. You won’t damage anything, though you might lose a tiny, invisible fraction of power—like when you put on sunglasses to look cooler but it actually slows your walking speed.
Surprising fact: Ferrari and Porsche routinely run their road cars on 98 or even 100 octane, but those cars have high-compression engines designed for it. Yours is a low-compression couch potato; 98 is just a massage for its valves.
The Myth of “Extra Power” (And Your Wallet’s Scream)
Now, you might think you’ll get a boost of speed like a cartoon rocket strapped to a tricycle. Nope. Unless your 95 car is tuned for 98 (which it isn’t), you’ll feel exactly zero horsepower increase. Your butt-dyno is lying; it’s the placebo effect, the same reason people think expensive water tastes crisper.
What you will feel is a burning sensation in your bank account. Premium fuel costs 30 to 50 cents more per gallon, and you’re paying extra for a capability your engine simply doesn’t use. It’s like buying a supercomputer to run a calculator app—impressive, but financially stupid.
Super vs Special Fuel: What's the Difference Between Super 98 and
One exception: if your 95 car is knocking and pinging like a broken maraca, then higher octane can help quiet it down. But that’s like using a Band-Aid on a broken leg; fix the real issue (carbon deposits, bad timing) instead of pouring gold juice into a sick engine.
