Can You Mix Gasoline from Different Gas Stations for Your Car?
2 Answers
You can mix gasoline from different gas stations for your car as long as the octane ratings are the same, but make sure to refuel at reputable gas stations. There are indeed some differences in fuel quality between different gas stations because their fuel sources vary. However, refineries produce gasoline according to national standards, so even if the octane values differ slightly, the variations are not significant. Gasoline from gas stations must meet the national standards for qualified fuel. For some off-brand gas stations, their cheaper fuel should absolutely not be used—although the price may be lower, the potential damage to your vehicle can be substantial. Therefore, it's essential to pay attention and refuel only at reputable gas stations.
Regarding the issue of mixing fuel from different gas stations, as someone who has long studied automotive fuels, I believe it is technically feasible to mix fuels, but it depends on the situation. Gasoline is primarily composed of base oil and additives, and the formulations from different gas stations may have slight differences, such as whether the octane levels are consistent or whether they contain detergents or anti-knock components. If you mix 92 and 95 octane gasoline, the overall octane level will average out, which may slightly affect combustion efficiency or even cause knocking, especially in older turbocharged engines. Occasional mixing is not a major issue, but long-term inconsistent usage may lead to increased carbon buildup and clogged fuel injectors. It is best to stick to the same brand or at least ensure consistent fuel standards, and choosing reputable gas stations can reduce risks. Regular engine inspections are also important to prevent minor issues from escalating into major problems. In summary, modern car designs are more compatible with different gasoline types, and while mixing is common, it is not recommended as a regular practice.
