Gasoline RON 98

RON 98 is the premium unleaded grade. Its higher octane rating resists knock in high-compression and turbocharged engines.

Octane is resistance to knock

The research octane number measures how far a gasoline can be compressed before it ignites on its own. Engines designed for 98 use that margin to run higher compression or boost pressure.

Refiners reach 98 by blending high-octane components such as reformate, alkylate and ethers. That makes it the costliest road grade and the smallest by volume.

At a glance

Product type
Premium unleaded gasoline
Governing standards
EN 228 in Europe; national standards elsewhere
Sold by
The metric ton or the barrel
Typical buyers
Fuel distributors and retail networks
Carried in
Clean product tankers

What EN 228 requires

PropertyReferenceWhy it matters
Research octane number98 minimumResistance to knock under light load. It is the number shown at the pump.
Motor octane number88 minimumResistance to knock under heavy load and high engine speed.
Sulfur10 mg/kg maximumProtects the catalytic converter.
Benzene1.0% by volume maximumA health limit. Benzene is a carcinogen.
Aromatics35% by volume maximumAromatics raise octane but increase exhaust emissions.
Density at 15 °C720 to 775 kg/m³Converts volume to weight and indicates energy content.

Limits are those published in the named standards, given for reference. The specification written into the sales contract governs.

How the grade is supplied

  • Super plus, RON 98

    The premium grade sold under EN 228 across Europe.

  • E5 and E10

    Blends with up to 5% or 10% ethanol by volume. The ethanol content must be stated.

  • Summer and winter grades

    Vapor pressure is lower in summer to limit evaporation and higher in winter to aid cold starting.

Storage and shipping

  • Cargo sizes. Medium-range product tankers carrying roughly 30,000 to 40,000 tonnes are the usual parcel.
  • Volatility. Gasoline is the most volatile clean product. Vapor control applies at loading and discharge.
  • Blendstocks. Cargoes often ship as blendstock and are finished with ethanol at the destination terminal.
  • Inspection. An independent inspector normally samples and certifies the parcel at the loading port.

Storage and transport are provided by third-party terminal operators and carriers. We coordinate them. How storage and shipping are arranged

A tanker berthed at a terminal jetty with loading arms connected

What to send with your enquiry

  • Octane grade and the governing standard
  • Ethanol content, or blendstock for later blending
  • Sulfur limit and the season of delivery
  • Quantity in tonnes and how often you need it
  • Destination port or terminal and preferred Incoterm
  • Delivery window

Send these details and we will tell you whether we can source the product and on what terms. Price, quantity and specification are fixed in the sales contract.