10月9日全国油价大降，98号汽油最低8.16元

Group 1 - The core viewpoint of the article is the significant drop in the price of 98 octane gasoline across China, with varying prices in different regions and the implications for consumers [1][2][6]. Group 2 - Nationwide, the price of 98 octane gasoline has decreased, with specific prices listed for various regions, such as Beijing at 9.07 CNY/liter and Gansu at 8.16 CNY/liter, highlighting a clear price disparity across the country [2]. - The reasons for the price differences include transportation costs, local tax policies, and supply-demand dynamics in different regions [4]. - The decrease in gasoline prices directly benefits consumers by lowering fuel costs, with potential savings of 10 to 25 CNY for a full tank, and may also lead to reduced logistics costs, indirectly affecting the prices of goods [6][10]. - Recommendations for consumers include choosing the appropriate gasoline grade for their vehicles, with 92 octane being sufficient for many cars, and employing strategies to save on fuel costs [9][10]. - Future oil price trends are expected to remain volatile but within a controlled range, influenced by international crude prices, currency exchange rates, and geopolitical factors [13].