Can I switch from 95 to 92?

[Alyssa]

New cars can switch from 95 to 92 gasoline after initial use, but once the fuel grade is determined, it should be consistently used. Strictly speaking, 92 and 95 gasoline should not be mixed. However, their chemical compositions and other aspects are relatively similar, with strong anti-knock properties. Generally, mixing them won't cause significant issues, but to ensure vehicle safety, it's best to use them separately. Additional information: 1. Generally, cars with a compression ratio between 8.5 and 9.5 should use 93 gasoline; cars with a compression ratio above 9.5 should use 95 gasoline. Currently, most domestic cars have a compression ratio above 9, so it's best to use 92 or 95 gasoline. 2. Car engines with higher compression ratios have greater power and fuel efficiency but often lack stability, requiring gasoline with better anti-knock properties. The advantage of 95 gasoline over 92 lies in its higher octane value, providing better anti-knock performance. Therefore, fuel should be added according to requirements. Some car owners believe that using higher-grade gasoline can enhance performance, but this is unnecessary because if the engine's compression ratio doesn't meet the standard, even the best gasoline won't make a difference.