Can I use 92 gasoline in a tank that recommends 93 or above?

[MacGarrett]

You can use it. There is no practical difference between 93 and 92 gasoline in actual usage, and these two types of gasoline can be mixed. Mixing different octane ratings will not cause chemical reactions. The differences between 93 and 92 gasoline are as follows: Octane rating difference: 93 gasoline has an octane rating of 93, while 92 gasoline has an octane rating of 92. The octane rating of 93 gasoline is higher than that of 92. Anti-knock capability difference: Anti-knock capability is determined by "isooctane" content - the higher the content, the stronger the anti-knock capability. 93 gasoline contains 93% isooctane, while 92 gasoline contains 92% isooctane. Therefore, 93 gasoline has better anti-knock capability than 92. Pollution level difference: Compared to 93, 92 gasoline has reduced anti-knock performance but contains lower levels of other indicators such as sulfur, benzene, aromatics, manganese, etc., making it more environmentally friendly. Practical usage difference: 93 gasoline complies with China IV emission standards, while China V standards changed to 92 gasoline. There's little practical difference between them in actual usage, and both are suitable for mid-range vehicles.