What’s in Esso Synergy regular diesel?
Esso’s fuel engineers spend hours and hours testing different ingredients and formulas, because they know the smallest change can make a difference. Like the molecules in their regular Synergy diesel that have been specially designed to help clean vital parts of your engine (like your car’s fuel injectors) and help look after your engine. You may have heard that nasty engine deposits can build up in your engine over time which prevent your car from performing at its best and can reduce your fuel economy. In fact, when we tested Synergy diesel on everyday cars it helped improve fuel economy by an average of 1.8%.*

What’s in Esso Synergy Supreme+ premium diesel?
The extra detergent that Esso add to our Synergy Supreme+ Diesel gives it a much higher cleaning power compared to their regular diesel and is designed to give you more power and fuel economy.**
What is the difference between regular and premium diesel?
Esso’s Synergy Supreme+ Diesel has double the amount of detergent additive than our regular diesel, which helps give your engine a deeper clean. And the cleaner your engine, the more power you’ll get and the more responsive it will be. Esso Synergy Supreme+ Diesel is designed to remove more of the nasty deposits in your engine, which helps to look after your engine and give you increased fuel economy.**

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*Figures supplied by Esso
*Esso Synergy Diesel Claims based on (1) internal or third party vehicle engine testing; and/or (2) government publications; and/or (3) industry or scientific literature. Testing based on diesel vehicles purchased on the UK used car market and independently tested at Mahle, UK. Fuel economy was assessed in the condition vehicles were received. Testing occurred over 4000 km using Esso Synergy Diesel and the average increase in fuel economy in the cars tested was 1.8%. Benefits may vary depending on factors such as engine type, engine condition, driving style, and diesel previously used.
**Esso Supreme+ Diesel has greater detergency which helps remove more injector deposits. Claims based on independent engine testing and industry/scientific literature. Benefits may vary depending on engine type, driving style and fuel previously used.






