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Should the first tank of fuel for a new car be filled with 95 octane?

1 Answers

DeJuniper

07/30/25 10:10am

If it is a turbocharged engine, it is recommended to use 95 octane gasoline, while a naturally aspirated engine can use 92 octane gasoline. Here are some reference suggestions: Introduction 1: Generally speaking, the octane rating marked on a car is the minimum safe rating for combustion. For example, if it is recommended to use gasoline with an octane rating of 92 or above, it means that the minimum allowed octane rating is 92. However, the minimum octane rating is definitely not the gasoline with the best fuel efficiency ratio. Introduction 2: The priority for choosing gasoline is usually based on the cylinder compression ratio. Generally, if the compression ratio is greater than or equal to 10:1, it is recommended to use gasoline with an octane rating of 95 or above. Additionally, when an engine is developed, there is a designed octane rating, and all designs are based on this rating. Engines with a 10:1 compression ratio are usually developed using 95 octane gasoline. At this octane rating, the optimal combustion efficiency can be achieved. Introduction 3: If the car experiences issues such as increased fuel consumption, insufficient power, idle shaking, or difficulty in cold starts, it is likely caused by engine carbon deposits. If carbon deposits are not cleaned in time, they can accumulate over time and easily cause engine tolerance issues, leading to poor engine operation. Therefore, regular carbon cleaning is also very necessary. If satisfied, please adopt this advice.

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