Checkout the full specs of the 2022 Alfa Romeo Stelvio Veloce Ti, from performance and fuel economy to colors and materials Fuel Tank Capacity. 16.9 gallons Cruising Range City. 371.8 miles 2023Alfa Romeo Stelvio Quadrifoglio - Vulcano. Save Share. Anyway, I strongly suspect that dealers are simply refilling the system with the rated capacity of oil after an oil change. Since that rated capacity is for a new engine that has no oil in the "nooks and crannies", it is too much to add after an oil change. 87xq.