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Should EFI Motorcycles Use 92 or 95 Octane Gasoline?

2 Answers

DiMaddox

07/24/25 5:08am

EFI motorcycles should use 92 octane gasoline. Below is an extended introduction: 1. Reasons for using 92 octane gasoline: The compression ratio of EFI motorcycle engines is 9.0:1, and a compression ratio between 9.5 and 10.5 is suitable for 92 octane gasoline. 2. Extraction and function of gasoline: Gasoline is produced by refining various gasoline components such as straight-run gasoline, catalytic cracking gasoline, and catalytic reforming gasoline, blended with high-octane components. It is primarily used as fuel for spark-ignition internal combustion engines in automobiles. 3. Introduction to EFI motorcycles: An EFI motorcycle is a new type of motorcycle where a microcomputer controls the fuel injectors to supply fuel to the working cylinders based on the engine load, while non-working cylinders do not receive fuel.

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OKennedy

08/11/25 12:48am

I've been riding fuel-injected motorcycles for several years, and this issue depends on the specific model. The main difference between 92 and 95 octane gasoline lies in anti-knock performance, with 95 having stronger anti-knock properties. However, higher octane doesn't necessarily mean better for the bike. The key factor is your motorcycle's compression ratio. Generally, only high-compression engines above 10:1 require 95 octane, otherwise it may lead to incomplete combustion and carbon buildup. My 150cc commuter bike's manual recommends 92, and I've had no issues using it. For sporty high-displacement bikes with aggressively tuned engines, 95 is safer. Additionally, fuel quality varies by region - if you hear engine pinging after refueling, pay attention. In short, following the manufacturer's recommendation is the safest approach; don't arbitrarily upgrade or downgrade fuel grades yourself.

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