Octane rating
Volvo requires premium fuel (91 octane or higher) for all T5, T6 and T8 engines, and recommends AKI 93 for optimal performance and fuel economy. See decal examples in illustrations 1 and 2. For optimal performance, Volvo recommends premium fuel (91 octane and higher) for T4 engines. However, engine reliability should not be affected as long as 87 octane or higher is used. See decal example in illustration 3.
Refueling
The fuel tank is equipped with a fuel filling system without a cover.