Depends on your country and gas station. Here in Canada, "premium" fuels often have different additive packages and different amounts of ethanol added. For exam

Depends on your country and gas station. Here in Canada, "premium" fuels often have different additive packages and different amounts of ethanol added. For example, https://www.shell.ca/en_ca/motorists/my-fuels/shell-v-power-nitro-plus-premium-gasoline.html https://www.shell.ca/en_ca/motorists/my-fuels/shell-v-power-...