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  1. Design Engineering (4)
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Price

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Coolant Additives

Showing 19 of 19 items
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Red Line Water Wetter Super Coolant
 
 
NOK 192.15 Ex VAT NOK 240.19 ALL TAXES PAID
Buy now, pay later with Klarna
Ring UV Dyes
 
 
From NOK 43.09 Ex VAT From NOK 53.86 ALL TAXES PAID
Klarna available on baskets over £99
Red Line Supercool Fortified With Water Wetter (Premix)
 
 
NOK 491.40 Ex VAT NOK 614.25 ALL TAXES PAID
Buy now, pay later with Klarna
Red Line Supercool Performance Coolant With Water Wetter
 
 
NOK 327.60 Ex VAT NOK 409.50 ALL TAXES PAID
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Red Line Supercool Fortified With Water Wetter (Concentrate)
 
 
NOK 639.45 Ex VAT NOK 799.31 ALL TAXES PAID
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VP Racing Madditive Cool Down
 
 
NOK 151.20 Ex VAT NOK 189.00 ALL TAXES PAID
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Millers Oils Extra Cool
 
 
NOK 150.44 Ex VAT NOK 188.05 ALL TAXES PAID
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Design Engineering Radiator Relief
 
 
NOK 111.51 Ex VAT NOK 139.39 ALL TAXES PAID
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Millers Oils Red Alpine Anti Freeze Summer Coolant
 
 
From NOK 45.94 Ex VAT From NOK 57.43 ALL TAXES PAID
Klarna available on baskets over £99
VR-12 Coolant Additive
 
 
NOK 141.75 Ex VAT NOK 177.19 ALL TAXES PAID
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Design Engineering Radiator Relief Flush
 
 
NOK 112.77 Ex VAT NOK 140.96 ALL TAXES PAID
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Design Engineering Chill Charger
 
 
NOK 112.77 Ex VAT NOK 140.96 ALL TAXES PAID
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Evans Vintage Cool 180 Degree (Waterless Engine Coolant)
 
 
From NOK 313.74 Ex VAT From NOK 392.18 ALL TAXES PAID
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Lucas Oil Super Coolant
 
 
NOK 156.50 Ex VAT NOK 195.63 ALL TAXES PAID
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Mishimoto Radiator Coolant Liquid Chill
 
 
NOK 226.55 Ex VAT NOK 283.19 ALL TAXES PAID
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Motul Mocool Coolant Additive
 
 
NOK 153.09 Ex VAT NOK 191.36 ALL TAXES PAID
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Frost Stay Cool Coolant Additive
 
 
NOK 176.78 Ex VAT NOK 220.98 ALL TAXES PAID
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Design Engineering Heater Hotter
 
 
NOK 112.77 Ex VAT NOK 140.96 ALL TAXES PAID
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Motul Auto Cool G13 Ultra Coolant (Concentrate)
 
 
From NOK 583.63 Ex VAT From NOK 729.54 ALL TAXES PAID
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Showing 19 of 19 items
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Additives are some of the most effective, yet frequently overlooked fluids you can put into a car. Coolant additives, in particular, are often forgotten in favour of the more widely used fuel and oil treatments, but they play a vital role in motorsport.

As a natural by-product of their operation, car engines produce a large amount of heat. In racing conditions, as you can imagine, the engine gets very hot indeed and is often at risk of overheating leaving you forced to retire from the race or back to the pits for some urgent work.

To combat this increase in heat and to maintain the perfect operating temperature, most engines feature a cooling system which pumps a special fluid around the inside of the engine and through a radiator. As regular water starts to boil at 100 degrees Celsius, either ethylene or propylene glycol is added to lower the boiling point and keep the fluid more stable. In order to keep your engine at a cool operating temperature and working how you want it to from lights out to the chequered flag, browse the full range of engine coolant additives available at Demon Tweeks today featuring additives from Red Line, Motul, Millers Oils and more top brands.