Features Home » Business and Financial Times » Thu 22nd Jan, 2026 » The GOIL difference: What’s really in your tank By Kofi Ansah Fuel quality is often simplified to a single number displayed on the pump – RON 91 or RON 95 for petrol, and, in the case of diesel, an implicit assumption that “diesel is diesel.” While these indicators are important, they represent only minimum combustion performance thresholds, not the full spectrum of fuel quality.