For most cars these days, buying higher octane gas is a waste of your money. Regular unleaded has approximately 87 octane already and is fine for your vehicle. For some unknown reason, several people I know personally just refuse to believe this, and I have no idea why.
True, there are some cars out there that are either over-engineered, poorly engineered, or have had too much in the way of after market modifications done to them, and do require higher octane fuels (mainly so they won’t “ping”), but if you drive an average late model car, check the fuel specifications in the owner’s manual – could be you’re throwing away hundreds of dollars a year on octane points you don’t really need.
High octane gas is always more expensive at the gas pump, so the next time you need to fill up, give regular gas a try (if your owner’s manual doesn’t specify premium) no harm will come to your vehicle.
If you do decide to try a lower octane gasoline, and your engine pings so bad it sounds like a machine gun, you can always cut your losses and buy an off the shelf octane booster from your local auto parts store, or “mega mall”, and ad it to your ill-fated tank of gas.
Octane is simply a measurement of how difficult it is to ignite the gas in your car, and has nothing to do with the quality of the gas. If you are experiencing engine pings, rattles, or knocks you can switch back to high octane gas.
However, if your owner’s manual does state that your car will run fine on “regular” octane gasoline, you shouldn’t be experiencing any of those knocks and rattles if you are keeping your vehicle maintained and making sure that you don’t miss those scheduled maintenance checkups.
If you’re driving a newer car that’s “regular-ready”, you definitely shouldn’t hear pings or knocks. If you do, get your vehicle to a mechanic ASAP.
