A Guide to Esso Supreme Fuels – By Stephen Buckley, Senior Fuel Analyst
Choosing the right fuel isn’t just a technical decision — it’s a strategic one. Whether you’re powering modern commercial vehicles, company cars, or specialist engines, premium fuels can make a noticeable difference to performance, efficiency, and long-term maintenance costs.
Esso Synergy Supreme + range is designed to go further than standard forecourt fuel, providing a deeper clean and supporting smoother, more efficient vehicle operation. For Fleetmaxx customers using the Esso Card™, both Supreme+ fuels are readily available across the UK.
Here’s a clear breakdown of the benefits.
Esso Synergy Supreme+ 99 Unleaded
High-octane, high-performance, and engineered for a cleaner, smoother drive
Esso’s premium unleaded petrol is formulated to deliver more power and cleaner running than standard 95 RON fuel.
Key Benefits
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99 RON high-octane fuel for improved efficiency and smoother acceleration.
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Double the detergent additive package, helping to thoroughly clean intake valves and fuel injectors.
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Friction-reducing formulation to help reduce engine wear and support better fuel economy.
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Helps maintain optimal combustion conditions for improved responsiveness.
Ethanol Content – Region-Specific Advantages
Although labelled E5, Esso Supreme + 99 is still ethanol-free in many regions — particularly southern England. This makes it a strong choice for:
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Classic and older vehicles
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Engines not compatible with E10
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Motorcycles, boats, garden machinery
Meanwhile, regions such as Scotland and North West England typically receive the ethanol-blended version due to supply-chain differences.
Esso Synergy Supreme+ Diesel
Esso’s cleanest-burning premium diesel for modern fleets
Esso Supreme + Diesel is formulated to help restore engine performance by tackling the root cause of inefficiency — injector fouling and carbon deposit build-up.
Key Benefits
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Double the cleaning additives compared to standard Synergy Diesel.
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Helps remove existing deposits and prevent new ones forming.
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Supports improved engine power, smoother running, and better throttle response.
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Provides corrosion protection to extend fuel-system component life.
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Helps maintain long-term fuel economy, especially in high-mileage commercial fleets.
Esso Ethos⁺™ 25% Renewable Diesel
(Premium Renewable Option)
Cleaner premium diesel made from used cooking oil — available at selected Esso sites
For fleets looking to reduce their carbon footprint without investing in new vehicles, Esso Ethos ⁺™ offers a practical drop-in solution.
Key Benefits
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Up to 25% renewable content, significantly reducing lifecycle CO₂ emissions.
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Derived primarily from used cooking oil, helping support circular-economy practices.
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Compatible with all diesel engines — no modifications required.
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Enhanced with the same high-performance cleaning additives used in Supreme+ Diesel.
This is an ideal stepping stone for businesses exploring low-emission fuels while maintaining operational flexibility.
Final thoughts
Esso’s Supreme+ fuels offer a real-world difference — delivering deeper cleaning, improved power, and long-term engine protection. For businesses using the Esso Card™ from Fleetmaxx Solutions, they’re an accessible way to enhance performance without dramatically increasing operating costs.
Other Esso fuels available on the Esso Card™ include:
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Esso Synergy Unleaded (95) – everyday petrol with engine-cleaning technology
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Esso Synergy Diesel – deposit-protecting diesel for efficient everyday running
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Esso Ethos⁺™ 25% Renewable Diesel – available at selected sites
If you’d like tailored advice on what fuel card is the right fit for your fleet, We are always available to help you make the most cost-effective, data-backed choice.
