Overall refining margins will be bullish in 2020. Gasoil and low sulfur fuel oil spreads to crude will overwhelm the weakness in high sulfur fuel oil and other fuels, initially. These pricing dynamics will be beneficial to refiners at both ends of the complexity spectrum. Light sweet crude refiners will benefit from gasoil and low sulfur fuel strength. At the other end of the spectrum, steep discounts for heavy sour crudes will support margins for refineries that can upgrade the HSFO in these crudes.