Can I add 92 gasoline when there is still 95 gasoline left in the tank?

[DeCaroline]

Occasionally mixing them is acceptable, but prolonged mixing of 92 and 95 gasoline can easily lead to clogging of the car's fuel injectors, carbon deposits in the engine, abnormal increase in fuel consumption, and in more severe cases, it may affect the engine's lifespan. Below are the differences between the two types of gasoline: 1. Composition: 92 gasoline consists of 92% isooctane and 8% n-heptane, while 95 gasoline consists of 95% isooctane and 5% n-heptane. The main difference lies in the purity of isooctane—the higher the purity, the stronger the gasoline's anti-knock properties, and consequently, the higher the price. 2. Stability: 95 gasoline has excellent stability, but it is more prone to combustion. The octane rating of 92 gasoline is 90%, while that of 95 gasoline is 95%. 3. Applicable vehicle models: When choosing between 92 and 95 gasoline, it is necessary to follow the car's manual. Generally, low-end cars can use 92 gasoline, while high-end cars require 95 gasoline to meet the engine's demands.