Base oil premiums to feedstock vacuum gasoil (VGO) in Europe are holding firm, which could push refiners in the region to favour base oils production over diesel.
The Argus-assessed European Group I domestic SN 150 spot price premium to vacuum gasoil (VGO) 2pc northwest Europe on a fob basis hit $327.28/t last week, compared with a diesel to VGO premium of $108.38/t in the same period. The differential between the base oil premium to VGO and diesel to VGO has held at well over $100/t since the start of February, which could start incentivising more base oil output. Refiners typically start prioritising base oil production over diesel when the differential between the base oil and diesel premiums to VGO holds at $100/t or above for a period of time, especially when VGO feedstock prices rise.
Supplies of VGO, diesel and base oil have tightened because of sanctions on Russian products, with refiners relying on other importers further afield for VGO, which has supported prices. VGO arrivals in Europe fell by 36pc from 2021 to 7mn t in 2024, Vortexa data show, with monthly VGO arrivals dwindling further from last November to February. European VGO premiums to Ice Brent crude futures have more than doubled from $6.50/bl to $14/bl on a cif ARA basis.
As well as feedstock availability constraints, weaker buying interest for diesel, in contrast to firming base oil demand, is another factor that could push refiners to prioritise base oil production. Consumers switching to gasoline, hybrid and electric vehicles and a weakening European industry is weighing on diesel demand across the region. And diesel margins to VGO could come under further pressure from higher diesel imports in Amsterdam-Rotterdam-Antwerp (ARA) in March, supported by more tankers taking the Red Sea route and the end of refinery maintenance season. This could contribute to make base oils margins more attractive to European refiners.
But Yemen-based Houthi forces have said that they will restart attacks on commercial shipping, prompting some clean tankers to divert away from the Red Sea route. This could support diesel prices and margins should supplies tighten again, and turn European refiners' focus back to diesel production over base oils.
But over the last decade an estimated 55pc of European Group I nameplate capacity has been cut, creating a structurally short market. And last year saw the closure of Eni's 600,000t/yr Livorno refinery, further cutting supplies, boosting spot prices and incentivising producers to increase output.