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Additives Comparison - July 2026

7 Best Additives In the UK

Last Updated - 01/07/2026

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Our Score

To Amazon

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Model

LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1

Model

Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)

Model

NutriPaw Dental Formula Water Additive For Dogs & Cats - Clean Teeth, Healthy Gums & Fresh Breath - Manage Plaque & Tartar Build-Up - Fuss-Free - No Brushing Needed - Cat/Dog Mouthwash & Oral Health

Model

Liqui Moly 2770 - Engine Oil Additive

Model

Redex Diesel Fuel System Cleaner 250ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy Fuel Additives For Diesel Engines, Suitable For Hybrids

Model

LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

Model

LIQUI MOLY Speed Tec Diesel | 250 ml | Diesel additive | SKU: 3722, k.A.

Brand

Liqui Moly

Brand

Archoil

Brand

NutriPaw

Brand

Liqui Moly

Brand

Redex

Brand

Liqui Moly

Brand

Liqui Moly

Reviews

19,977 reviews

Reviews

6,954 reviews

Reviews

9,552 reviews

Reviews

18,507 reviews

Reviews

12,147 reviews

Reviews

7,911 reviews

Reviews

3,939 reviews

Features

Worth the money

7.9

Worth the money

7.7

Worth the money

7.6

Worth the money

8.1

Worth the money

9.4

Worth the money

9.6

Worth the money

8.9

Simple to use

9.4

Simple to use

9.3

Simple to use

9.1

Simple to use

9.6

Simple to use

9.9

Simple to use

9.9

Simple to use

9.1

Distance

7.6

Distance

7.4

Distance

7.2

Distance

7.7

Distance

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Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you

9.9
1

Liqui Moly
LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1

9.4 Simple to use

7.9 worth the money

7.6 distance

Why we love it

Improves engine smoothness quickly

Reduces fuel consumption

Easy to mix with most engine oils
Main highlights

SMOOTHER ENGINE PERFORMANCE FROM VERY FIRST USE: An engine additive formulated with high-tech ceramic compounds, high thermal resilience. Additive ensures smoother-running engine, extending the engine’s lifespan. Can be used with manual & automatic transmissions. Not suitable for use with wet clutches.
LOWER FUEL CONSUMPTION and diminished emission of pollutants due to smoother engine operation.
EVERYTHING THAT DRIVES WORKS BETTER WITH LIQUI MOLY: We manufacture over 4,000 products: engine oils, additives, vehicle care, chemical servicing and repair, adhesives and sealing products. Our products are currently distributed to over 150 countries worldwide. They are popular everywhere, ensuring a superior driving experience and improved engine performance.
EASY TO ADD DURING OIL CHANGES: The 300 ml bottle is sufficient for up to 5 liters of engine oil. Shake well before use and add to fresh oil. Can be mixed with all gear & engine oils on the market. Long-lasting performance, up to 50,000 km.
CERTIFIED EFFECTIVENESS proven by TÜV Thüringen: Chemical components in Cera Tec smooth out rough surfaces, the ceramic particles fill in uneven surface imperfections. Prevents direct contact of all metal parts, reducing friction and wear & tear. Turbo & Cat tested.
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9.8
2

Archoil
Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)

9.3 Simple to use

7.7 worth the money

7.4 distance

Why we love it

Improves engine performance and fuel economy

Cleans injectors and critical engine parts

Highly concentrated formulation for cost savings
Main highlights

TRANSFORMS ALL DIESEL ENGINES GUARANTEED. Improved Cold Start, Eliminates Diesel Knock, Fuel System Cleaner, Fuel Injector Cleaner, Carbon Cleanr, DPF Cleaner, EGR Valve Cleaner, CAT Cleaner, Turbo Cleaner and Exhaust cleaner.
RESOLVES ENGINE PROBLEMS. Multiple detergents and post-combustion fuel-borne catalysts deliver a proprietary blend of Professional Grade Cleaning. Now you can reduce the chance of engine problems while enjoying a smoother and more responsive engine.
MAXIMUM ENGINE PERFORMANCE AND FUEL ECONOMY. This diesel additive maintains & improves engine pickup, performance and fuel economy. This diesel additive also lowers harmful exhaust emissions and exhaust particulates.
HIGHLY CONCENTRATED FORMULATION with no fillers. 100% Active Ingredients and manufactured in the UK. 1ml Treats 1L of Diesel Fuel. 1L bottle treats up to 1,000L of fuel.
EXCEPTIONAL HIGH-PERFORMING SUPER DIESEL FUEL. AR6900-D MAX converts low-quality supermarket diesel into high-performing Super Diesel Fuel using a carefully selected blend of pure 2-EHN cetane improver, multiple detergents, ester lubricant, stabiliser and combustion catalyst.
CUSTOMER SATISFACTION IS OUR PRIORITY. Feel free to contact us if you have any query regarding this diesel cleaner. All Archoil fuel cleaners include professional support and Performance and Emissions Pass Guarantee. Over a decade of success and trusted by professionals.
CLASS LEADING CETANE IMPROVER AND ESTER LUBRICANT using the highest purity 2-EHN and proprietary ester lubricant delivering below 290 on the HFRR scar wear test.
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9.7
3

NutriPaw
NutriPaw Dental Formula Water Additive For Dogs & Cats - Clean Teeth, Healthy Gums & Fresh Breath - Manage Plaque & Tartar Build-Up - Fuss-Free - No Brushing Needed - Cat/Dog Mouthwash & Oral Health

9.1 Simple to use

7.6 worth the money

7.2 distance

Why we love it

Easy to use with daily routine

Supports healthier teeth and gums

Improves pet's breath
Main highlights

HASSLE-FREE, FUSS-FREE - Skip the brushing, and stop the reliance on ineffective chews! The water additive is super easy to give, odourless & tasteless; just add it to their water bowl each day – it’s that easy!
FRESH BREATH - Say goodbye to bad breath with our odour-fighting formula. Our fresh breath blend is packed with natural ingredients to maintain kiss-friendly breath
FOR CATS & DOGS - Suitable for both canine and feline friends. The perfect way to manage your pet's oral health, in just a few seconds per day
CLEAN TEETH & HEALTHY GUMS - Easy, quick & effective way to support your cat or dog's dental health. Helps to manage plaque & tartar build-up in those difficult-to-reach areas
"Remarkable difference in my pet's teeth, they are cleaner & their breath is kiss-able. There is 0 hassle, they don't notice a thing!"
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Our ranking system

The topchoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.
We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. topchoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.

Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.

Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.

Value for money

topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

7 Best Additives In the UK

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

Distance

Tech Specs

product dimensions

manufacturer part number

item weight

model

Available On

Our Top 3 Picks

LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1

Why we love it

Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)

Why we love it

NutriPaw Dental Formula Water Additive For Dogs & Cats - Clean Teeth, Healthy Gums & Fresh Breath - Manage Plaque & Tartar Build-Up - Fuss-Free - No Brushing Needed - Cat/Dog Mouthwash & Oral Health

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

Value for money

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E FOR ADDITIVES: A Simple Guide to Food Additives and Preservatives (Completely Revised Bestselling Number Guide)

Wynn's Crystal Clean & Protect - Additive for Use with AdBlue® - Prevents Crystallisation in SCR Systems - Enhances Diesel Emission Control Performance - 125ml

Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy Fuel Additives For Petrol Engines, Suitable For Hybrids

7 Best Additives In the UK

additives comparison

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

Distance

Tech Specs

product dimensions

manufacturer part number

item weight

model

Available On

Our Top 3 Picks

LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1

Why we love it

Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)

Why we love it

NutriPaw Dental Formula Water Additive For Dogs & Cats - Clean Teeth, Healthy Gums & Fresh Breath - Manage Plaque & Tartar Build-Up - Fuss-Free - No Brushing Needed - Cat/Dog Mouthwash & Oral Health

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

Value for money

Related deals you might like for additives

E FOR ADDITIVES: A Simple Guide to Food Additives and Preservatives (Completely Revised Bestselling Number Guide)

Wynn's Crystal Clean & Protect - Additive for Use with AdBlue® - Prevents Crystallisation in SCR Systems - Enhances Diesel Emission Control Performance - 125ml

Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy Fuel Additives For Petrol Engines, Suitable For Hybrids

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