What Grade of Gasoline Should a Car Use?

[OFrank]

Automobiles use three grades of gasoline: 92, 95, and 98. Choosing the Right Gasoline for Your Car: Gasoline is crucial for vehicle operation. The selection of gasoline should be based on the engine's compression ratio, as the appropriate grade ensures optimal performance. When refueling, always follow the specifications in your vehicle's manual. Do not use gasoline with a higher or lower grade than recommended. Gasoline Grade Classification: Currently, the gasoline available on the market mainly includes three grades: 92, 95, and 98. 92-grade gasoline has the lowest anti-knock properties and is the most affordable. 98-grade gasoline offers the highest anti-knock properties and is the most expensive. 95-grade gasoline is intermediate in both anti-knock properties and price. Cars with standard naturally aspirated engines, which have lower fuel requirements, can generally use 92-grade gasoline. Vehicles with turbocharged engines or higher compression ratios are better suited for 95-grade gasoline. High-end luxury or high-performance cars, which demand superior fuel quality, should use 98-grade gasoline.