Should Audi A6 use 95 or 98 gasoline?
2 Answers
Audi A6 can use either 95 or 98 gasoline. The differences between 95 and 98 gasoline are introduced as follows: Different octane ratings: 98 gasoline is a mixture of 98% isooctane and 2% n-heptane; 95 gasoline is a mixture of 95% isooctane and 3% n-heptane. Different anti-knock combustion capabilities: 98 gasoline has higher anti-knock properties and power performance among gasolines; 95 gasoline has average anti-knock combustion capability. Gasoline appears as a transparent liquid, is flammable, with a distillation range of 30°C to 220°C, mainly composed of C5 to C12 aliphatic hydrocarbons and cycloalkanes, as well as a certain amount of aromatic hydrocarbons.
My A6 has been running on 95-octane gasoline for five years without any issues. The manufacturer's manual clearly states '95 octane or higher recommended,' indicating the engine is fully compatible with 95. While 98-octane has higher anti-knock properties due to increased octane rating, it costs over 1 yuan more per liter, making it unnecessary for long-term use. Unless you frequently engage in aggressive driving or have engine modifications, 95-octane is perfectly adequate. Gas station attendants often try to upsell me to 98, but my actual tests show only about a 0.3L difference in highway fuel consumption between the two. Just remember never to use 92-octane, as it may cause engine knocking and damage.
