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RED LINE WaterWetter Special SUPER Coolant Additive - Diesel

RED LINE WaterWetter Special SUPER Coolant Additive - Diesel


RED LINE WaterWetter - Diesel - 443ml Bottle

443ml Bottle


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  • Description
  • Shipping Explained

RED LINE WaterWetter Special SUPER Coolant Additive - Diesel

Important: RED LINE WaterWetter is a Coolant ADDITIVE and DOES NOT contain any Antifreeze. It's main purpose is to reduce Engine Running Temperatures and raise existing Antifreeze / Coolant boiling points.

Unique agent for cooling systems that doubles the wetting ability of water.

Reduces or eliminates bubbles or vapor barrier that form on hot metal surfaces to reduce coolant temperatures by up to 20°

Cooling system heat transfer agent for use with antifreeze / water solutions Improves the ability of coolant to wet heat transfer surfaces by 50%. This provides significantly better coolant contact in the cylinder head temperature by as much as 10-20F. This product will not lower the temperature of the cooling system below the thermostat temperature and will be effective when the thermostat is wide open, such heavy traffic or climbing long grade. This improvement in wetting helps reduce cavitations in liners and water pumps.

Designed for heavy-duty diesel engines which use more than 33% antifreeze or a supplemental corrosion package

Similar properties and benefits to regular WaterWetter, but lacks rust and corrosion inhibitors

Type Dilution:
Reduce coolant temperatures by up to 20°
1 bottle (443ml) will treat 10-15 gallons (37 - 56 Litres)

View our online Antifreeze / Coolant Explained document, or download the PDF and find great information on what makes a good Antifreeze / Coolant and what all those specifications actually mean.

Shop for all our Antifreeze / Coolant

PDF Downloads:

Download the Safety PDF


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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