Request a catalogue

Available Catalogues

I'm interested in:
  • Motorsport
  • Motorcycle
  • Performance
  • Tools and Workshop

Category

Brand

  1. Design Engineering (5)
  2. Frost (1)
  3. Lucas Oil (1)
  4. Millers Oils (2)
  5. Mishimoto (1)
  6. Motul (2)
  7. Red Line (4)
  8. Ring (1)
  9. VP Racing (1)
  10. VR-12 (1)
Show Less

Size

  1. 118ml (1)
  2. 2 Quart (1.9 Litre) (1)
  3. 250ml (1)
  4. 3.78 Litre (2)
  5. 1 Litre (2)
  6. 20 Litre (1)
  7. 355ml (1)
  8. 473ml (8)
  9. 5 Litre (2)
  10. 500ml (1)
  11. 60 Litre (1)
Show Less

Promo Badge

  1. New (1)

Price

29 432

Category

Showing All

Brand

Showing All

Size

Showing All

Promo Badge

Showing All

Price

Showing All

Coolant Additives

Showing 19 of 19 items
Filter
Red Line Water Wetter Super Coolant
DKK 129.63 Ex VAT DKK 162.04 ALL TAXES PAID
Red Line Supercool Performance Coolant With Water Wetter
DKK 221.00 Ex VAT DKK 276.25 ALL TAXES PAID
Red Line Supercool Fortified With Water Wetter (Concentrate)
DKK 431.38 Ex VAT DKK 539.23 ALL TAXES PAID
Red Line Supercool Fortified With Water Wetter (Premix)
DKK 331.50 Ex VAT DKK 414.38 ALL TAXES PAID
Motul Mocool Coolant Additive
DKK 103.28 Ex VAT DKK 129.10 ALL TAXES PAID
Ring UV Dyes
From DKK 29.07 Ex VAT From DKK 36.34 ALL TAXES PAID
VP Racing Madditive Cool Down
DKK 102.00 Ex VAT DKK 127.50 ALL TAXES PAID
Millers Oils Extra Cool
DKK 95.20 Ex VAT DKK 119.00 ALL TAXES PAID
Millers Oils Red Alpine Anti Freeze Summer Coolant
From DKK 29.24 Ex VAT From DKK 36.55 ALL TAXES PAID
Frost Stay Cool Coolant Additive
DKK 127.42 Ex VAT DKK 159.28 ALL TAXES PAID
Lucas Oil Super Coolant
DKK 106.85 Ex VAT DKK 133.56 ALL TAXES PAID
Design Engineering Radiator Relief Flush
DKK 76.08 Ex VAT DKK 95.10 ALL TAXES PAID
Design Engineering Radiator Relief
DKK 75.23 Ex VAT DKK 94.04 ALL TAXES PAID
Design Engineering Chill Charger
DKK 76.08 Ex VAT DKK 95.10 ALL TAXES PAID
Design Engineering Heater Hotter
DKK 76.08 Ex VAT DKK 95.10 ALL TAXES PAID
VR-12 Coolant Additive
DKK 95.63 Ex VAT DKK 119.54 ALL TAXES PAID
Mishimoto Radiator Coolant Liquid Chill
DKK 155.89 Ex VAT DKK 194.86 ALL TAXES PAID
Motul Auto Cool G13 Ultra Coolant (Concentrate)
From DKK 393.72 Ex VAT From DKK 492.15 ALL TAXES PAID
New
Design Engineering Radiator Relief For Diesel Vehicles
DKK 79.22 Ex VAT DKK 99.03 ALL TAXES PAID
Showing 19 of 19 items
Filter

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.