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Car Additives & Flushes

Opie Oils stocks a wide range of engine cleaner, engine flushes, fuel treatments and fuel additives to help keep your fuel system running at peak efficiency, octane boosters for increased performance on road or track plus lead replacement products for older cars.

Please note that we are unable to send fuel treatments to destinations outside the UK.

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204 Products (Viewing: 1 - 61 of 204)

Millers Oils Engine Flush Fully Synthetic Engine Oil Treatment
 
Millers Oils Diesel Power Ecomax Fuel Treatment Multishot
Millers Oils CVL Extra Competition Valve Lubricant - High Octane Booster
Classic Valvemaster PLUS 3-in-1 Lead Replacement Additive
On Sale

250ml (treats 250 litres)

Was £14.50
£13.78
Price Beater
Liqui Moly Engine Flush Plus
Millers Oils Petrol Power ECOMAX Fuel Treatment
Silkolene PRO BOOST Octane Improver (Fuchs)
On Sale
Was £22.99
£21.84
Price Beater
Castrol Engine Shampoo (Pre-Oil Change Treatment)
Millers Oils VSPe Power Plus Multi-Shot (Ethanol / Lead / Octane) Fuel Treatment
RED LINE WaterWetter Super Coolant Additive
Millers Oils VSPe Power Plus One Shot (Ethanol / Lead / Octane) Fuel Treatment
VP Racing Madditive Octanium Unleaded
On Sale

1 Quart (946ml)

Was £24.95
£23.70
Price Beater
JLM Diesel Turbo Cleaner
On Sale

500ml

Was £34.99
£33.24
Price Beater
Wynns Crystal Clean And Protect
On Sale
Was £7.99
£6.60
Price Beater
RED LINE SI-1 Fuel System Cleaner
On Sale

443ml Bottle

Was £18.95
£18.00
Price Beater
Millers Oils Diesel Injector Cleaner
Millers Oils Petrol Injector Cleaner
Millers Oils Diesel Particulate Filter (DPF) Cleaner & Regenerator
Millers Oils Extra Cool (Corrosion Inhibitor & Coolant Enhancer) Concentrate
Millers Oils Diesel Power EcoMax One Shot Boost
Classic Valvemaster Lead Replacement Additive
Motul MoCool Car & Motorcycle Coolant Additive - Concentrate
Wynn's Xtreme Diesel System Clean - Powerful 'One Tank' Clean-Up
Wynns Catalytic Converter & Lambda Cleaner
JLM Diesel Injector Cleaner
On Sale

250ml

Was £10.99
£10.44
Price Beater
Liqui Moly Motor Oil Saver
Kalimex JLM Oil Stop Smoke Treatment
Dipetane Pre-combustion Fuel Treatment - 100% Hydrocarbon (no additives)
On Sale
Was £12.95
£12.30
Price Beater
Kalimex JLM Petrol Extreme Clean Fuel Additive
JLM Petrol GDI Injector Cleaner
On Sale

250ml

Was £16.99
£16.14
Price Beater
Wynns Engine Flush for Petrol & Diesel Engines - Detergent Based
Elke PAG ISO 46 Compressor Oil With Dye For Automotive Compressor Systems R134a
Wynns Total Action Diesel Cleaner
On Sale

325ml

Was £13.99
£13.30
Price Beater
Comma X-Flow Flush Out Mineral Engine Oil Flush
HOLTS EGR & Carb Cleaner Aerosol
On Sale

500ml Aerosol

Was £5.95
£5.65
Price Beater
Kalimex JLM Diesel DPF Cleaner Aerosol Spray - 400ML
Millers Oils Stop Leak Engine and Gear Oil Treatment
STP Complete Diesel Fuel System Cleaner (65400EN)
Millers Oils Tank Safe Petrol Additive Fuel System Protection
Wynns Diesel Turbo Cleaner (31563B)
Wynns Air Intake, Carburettor & Throttle Valve Cleaner
Silkolene PRO FST Fuel System Treatment For Petrol Engines
On Sale
Was £16.99
£16.14
Price Beater
RED LINE 85 PLUS Diesel Enhancer
On Sale

355ml Bottle

Was £13.50
£12.83
Price Beater
Millers Oils CVL (Valve Seat Lubricant & Combustion Enhancer)
Motul Valve Expert - Petrol Lead Replacement Fuel Additive
Millers Oils Petrol Power ECOMAX Fuel Treatment - One Shot Boost
Silkolene PRO CCA Ultra Cooling System Corrosion Inhibitor
RED LINE Lead Substitute Additive
On Sale

355ml Bottle

Was £16.99
£16.14
Price Beater
RED LINE Fuel System Additive - Water & Antifreeze / Coolant Remover - Concentrate
RED LINE WaterWetter Special SUPER Coolant Additive - Diesel
Valvoline Diesel System Cleaner
Valvoline Engine Oil System Cleaner
Valvoline VPS HD Diesel System Complete V1
Valvoline Engine Oil Stop Leak ML V1
Valvoline Engine Oil Treatment ML V1
Valvoline Cooling System Stop Leak ML V1
Valvoline Petrol System Cleaner V1
RED LINE Alcohol Fuel Lubricant
On Sale

355ml Bottle

Was £21.95
£20.86
Price Beater
Power Maxed Concentrated Radiator Flush Treatment
Motul Diesel System Clean Auto - Injector & Fuel System Cleaner