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Performance Engine Oils
RED LINE Fuel System Additive - Water & Antifreeze / Coolant Remover - Concentrate

RED LINE Fuel System Additive - Water & Antifreeze / Coolant Remover - Concentrate


REDLINE Fuel System Antifreeze - 355ml bottle

355ml bottle


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  • Description
  • Benefits
  • Shipping Explained

RED LINE Fuel System Additive - Water & Antifreeze / Coolant Remover - Concentrate

Red Line Fuel System Water and Antifreeze / Coolant Remover is an Additive designed to disperse controlled amount of water in diesel fuel or petrol in order to eliminate contamination and condensation in fuel tanks and to prevent the water from freezing in the fuel lines and fuel filters - a major cause of cold-weather engine shutdown.

One ounce per 20 gallons is recommended (1 bottle treats nearly 950 litres of fuel) and with moderate agitation will disperse one ounce of water into very tiny droplets, reducing the freezing point to -5°F (-20°C). Greater concentrations can be added to reduce the freezing point even lower or to remove greater concentration of water from the fuel.

Synthetic lubricants in this additive will lubricate both the water and fuel phases, preventing damage to the injectors and fuel pump. In fact, this additive will improve the lubricity of the water phase enough that it will provide lower friction and wear than untreated diesel fuel alone.

Recommended dosage:

One Ounce (29.57ml) per 20 gallons (75 Litres) is recommended to remove one ounce (29.57ml) of water droplets, large treatment amounts can be used for greater contamination.

Type of Dilution:
One ounce removes 29.57ml of water
One Ounce (29.57ml) per 20 gallons (75 Litres)
One bottle treats up to 250 gallons

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Removes water from diesel or petrol systems, treats up to 250 US gallons (just under 950 litres).
  • Significantly reduces the freezing point of water in the fuel system
  • Provides excellent fuel lubrication
  • Can be used in combination with Red Line SI-1 Complete Fuel System Cleaner and Red Line 85 Plus


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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