Is it okay to consistently use 95 gasoline for a car labeled for 92?
2 Answers
It is possible but unnecessary. Here are the differences between 92 and 95 gasoline: 1. The anti-knock performance of 92 gasoline is slightly weaker than that of 95 gasoline. Since engines have different compression ratios, their requirements for gasoline's anti-knock properties also vary. Engines with lower compression ratios only need to use 92 gasoline, while those with higher compression ratios require 95 gasoline with better anti-knock performance. If 92 gasoline is used in such engines, knocking may occur. Frequent knocking can easily damage the engine, so it is important to choose the appropriate gasoline grade for your vehicle. 2. Although some people claim that 95 gasoline burns slower and long-term use in vehicles with low-compression engines may lead to carbon deposits or reduced power, this is unlikely to happen, and car owners can use it with confidence. However, using higher-grade gasoline does not provide significant additional benefits for the vehicle and is more expensive, making it unnecessary.
I used to work at a gas station, and this question is quite common. It's completely fine to use 95 octane fuel in a car that recommends 92 long-term, but it is indeed a bit of a waste of money. 95 octane has a higher octane rating and better anti-knock performance, but it's unnecessary for regular engines. If the manufacturer recommends 92, it means the car's compression ratio is designed for 92. My old Corolla always used 95, and there was no difference in fuel consumption or power compared to using 92. However, it cost me dozens of yuan more each time I refueled, and the extra money over a year could buy a new tire. That said, if you occasionally use 95 for peace of mind, it's fine, but never mix different octane fuels—that can actually damage your car.
