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What happens if you fill a car designed for 95 octane with 98 octane fuel?

1 Answers

VanElijah

07/30/25 4:30am

If the vehicle's specified fuel grade is 95 octane, using 98 octane fuel won't cause issues, but it may reduce acceleration performance as 98 octane fuel is more focused on lowering fuel consumption. Here are the details: 1. Both 95 and 98 octane fuels are high-grade gasoline and can be used. The main difference lies in their octane ratings - 98 octane has higher octane value, which primarily improves anti-knock performance. When car engines operate, knocking occurs, and better anti-knock performance means more powerful engine output. It's best to follow the vehicle's manual for fuel selection. 2. It's advised not to arbitrarily use higher or lower octane fuel than recommended. Doing so may lead to increased carbon deposits. Always use the manufacturer-recommended fuel grade for optimal performance. Following the engine's compression ratio or the vehicle manual's fuel requirements ensures more scientific and economical operation while maximizing engine efficiency.

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Why Can't GAC Trumpchi Shift Gears?

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