How to Determine the Appropriate Gasoline Grade for Your Car
2 Answers
Methods to determine the appropriate gasoline grade for your car: 1. Refer to the car's user manual, which records the recommended gasoline grade for the car; 2. The fuel cap will indicate the fuel grade, recommending the owner to use a certain grade of gasoline, and which grade is optimal. Generally, engines with a compression ratio between 7.5 and 8.0 should use 90 to 93 octane gasoline; those between 8.0 and 8.5 should use 90 to 93 octane gasoline; those between 8.5 and 9.0 should use 93 to 95 octane gasoline; and those between 9.5 and 10.0 should use 95 to 97 octane gasoline.
After driving for so many years, I've found that checking the gasoline octane number is actually quite simple. Usually, you just open the fuel tank cap, and there's a label inside indicating the recommended gasoline octane number, such as 92 or 95. If you're unsure, check the vehicle's owner's manual—that thick book that came with the car, usually tucked away in the glove compartment. When I was younger, I once filled up with lower-octane fuel by mistake, and the engine knocked badly, losing power when I stepped on the gas, and I ended up spending a fortune on repairs. So now, I always double-check. Using the correct octane not only protects the engine but also improves fuel efficiency, keeping the engine running as smoothly as new. Especially before long trips, I always make sure to verify it to avoid issues on the road. Remember, if the label is faded, just ask the mechanics at the 4S shop or a local garage—they can give you the answer in a second.
