If you are choosing between MGO vs VLSFO, start with the route and the vessel. VLSFO is usually the main-engine choice outside Emission Control Areas for ships built to burn residual fuel. MGO or LSMGO is usually the cleaner distillate choice for ECA legs, auxiliary use, smaller vessels and simpler handling.
The price difference matters, but it changes by port and date. The current Bulugo spread snapshot above compares same-port MGO or LSMGO indications against VLSFO where fresh data is available. Treat it as market context, then move into chat with port, quantity, vessel and delivery window for firm supplier quotes.
MGO vs VLSFO: quick answer
Choose VLSFO when the vessel is operating outside ECAs, is set up for residual fuel handling, and the commercial aim is a compliant main-engine stem at a lower indication than distillate fuel.
Choose MGO or LSMGO when the voyage enters an ECA, when auxiliary engines or smaller vessels need distillate fuel, when no pre-heating is preferred, or when the vessel's operating profile makes fuel switching and cleaner handling more important than the indication premium.
VLSFO - Very Low Sulphur Fuel Oil
Since the IMO 2020 sulphur cap took effect, VLSFO has become the default fuel for many ocean-going vessels without scrubbers. With a maximum sulphur content of 0.50% mass/mass, it meets the global sulphur limit outside stricter Emission Control Areas.
VLSFO is a blended residual fuel. Refineries and suppliers combine components to hit the sulphur target, which means quality can vary between ports, suppliers and batches. Stability, compatibility and supplier documentation matter when switching between VLSFO stems.
Use current VLSFO prices to benchmark port-level indications, or start from all bunker prices when you are still comparing ports and grades.
When to use: Main-engine fuel for compatible vessels without scrubbers operating outside ECAs.
MGO and LSMGO - Marine Gas Oil and Low Sulphur Marine Gas Oil
MGO and LSMGO are distillate marine fuels. In buyer searches, "MGO vs VLSFO" and "LSMGO vs VLSFO" often describe the same practical question: should the vessel burn residual VLSFO or a cleaner distillate grade for this leg?
MGO and LSMGO burn cleaner than residual fuels and normally do not require residual-fuel pre-heating. They are commonly used for ECA compliance, auxiliary engines, smaller vessels, changeover periods and operational situations where clean handling is worth the price premium.
Use live MGO prices when the grade is already likely, or compare relevant port pages such as Singapore, Rotterdam, Gibraltar and Antwerp when route flexibility matters.
When to use: ECA legs, auxiliary engines and generators, smaller commercial vessels, and routes where clean distillate handling is operationally preferred.
IFO380 - Heavy Fuel Oil
IFO380 is a heavier residual fuel. It can be commercially attractive for vessels with scrubbers or specific fuel systems, but it is not the direct substitute for MGO in ECA planning.
Compare IFO380 with VLSFO when the vessel has the equipment and compliance route to use it. Compare MGO or LSMGO with VLSFO when the route, ECA exposure, auxiliary load or vessel setup points toward distillate fuel. Check IFO380 prices for that separate scrubber-economics discussion.
When to use: Main-engine fuel for compatible, scrubber-fitted vessels operating where the fuel and compliance setup are appropriate.
How to choose the right fuel grade
The decision usually comes down to four practical checks:
- Trading area: Will the vessel enter an ECA or local low-sulphur zone during the stem or voyage leg?
- Vessel equipment: Can the ship safely receive, store, heat, transfer and burn the grade under consideration?
- Handling and changeover: Is the crew planning a fuel switch, auxiliary use, cold-weather handling or short-notice operation?
- Current port spread: What does the same-port MGO/LSMGO premium over VLSFO look like today, and does the delivery window change supplier availability?
For a procurement workflow view, use the marine fuel procurement guide. It explains how to move from market indication to structured supplier quote without turning the decision into a separate calculator, form or spreadsheet workflow.
From fuel choice to firm quotes
Published price indications are useful for deciding the likely grade, but they are not binding offers. A firm quote depends on port, grade, quantity, vessel, delivery window, supplier availability and credit.
When you are ready, start a Bulugo chat from this page with the comparison context already attached. Include the likely grade, the alternative grade if still under consideration, the port, quantity, vessel name or IMO, and delivery window. Bulugo can then move the decision from "MGO or VLSFO?" into supplier quotes for the actual stem.
FAQ
Should I use MGO or VLSFO?
Use VLSFO for most compatible main-engine operation outside ECAs. Use MGO or LSMGO for ECA legs, auxiliary use, smaller vessels, cleaner handling or when the vessel cannot practically use residual fuel for the planned operation.
Why is MGO usually more expensive than VLSFO?
MGO and LSMGO are cleaner distillate fuels with lower sulphur and easier handling. The premium changes by port and date, so use the timestamped Bulugo spread snapshot as an indication before requesting firm supplier quotes.
Are Bulugo price indications firm quotes?
No. Bulugo price indications are market context. Firm bunker quotes depend on port, fuel grade, quantity, vessel, delivery window, supplier availability and credit terms.