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

Price

44 655

Category

Showing All

Brand

Showing All

Size

Showing All

Price

Showing All

Coolant Additives

Showing 19 of 19 items
Filter
Red Line Water Wetter Super Coolant
SEK 196.73 Ex VAT SEK 245.91 ALL TAXES PAID
Red Line Supercool Performance Coolant With Water Wetter
SEK 335.40 Ex VAT SEK 419.25 ALL TAXES PAID
Red Line Supercool Fortified With Water Wetter (Concentrate)
SEK 654.68 Ex VAT SEK 818.35 ALL TAXES PAID
Red Line Supercool Fortified With Water Wetter (Premix)
SEK 503.10 Ex VAT SEK 628.88 ALL TAXES PAID
Motul Mocool Coolant Additive
SEK 156.74 Ex VAT SEK 195.93 ALL TAXES PAID
Ring UV Dyes
From SEK 44.12 Ex VAT From SEK 55.15 ALL TAXES PAID
VP Racing Madditive Cool Down
SEK 154.80 Ex VAT SEK 193.50 ALL TAXES PAID
Millers Oils Extra Cool
SEK 144.48 Ex VAT SEK 180.60 ALL TAXES PAID
Millers Oils Red Alpine Anti Freeze Summer Coolant
From SEK 44.38 Ex VAT From SEK 55.48 ALL TAXES PAID
Frost Stay Cool Coolant Additive
SEK 193.37 Ex VAT SEK 241.71 ALL TAXES PAID
Lucas Oil Super Coolant
SEK 162.15 Ex VAT SEK 202.69 ALL TAXES PAID
Design Engineering Radiator Relief Flush
SEK 115.46 Ex VAT SEK 144.33 ALL TAXES PAID
Mishimoto Radiator Coolant Liquid Chill
SEK 236.59 Ex VAT SEK 295.74 ALL TAXES PAID
Design Engineering Heater Hotter
SEK 115.46 Ex VAT SEK 144.33 ALL TAXES PAID
Design Engineering Chill Charger
SEK 115.46 Ex VAT SEK 144.33 ALL TAXES PAID
VR-12 Coolant Additive
SEK 145.13 Ex VAT SEK 181.41 ALL TAXES PAID
Motul Auto Cool G13 Ultra Coolant (Concentrate)
From SEK 597.53 Ex VAT From SEK 746.91 ALL TAXES PAID
Design Engineering Radiator Relief
SEK 114.17 Ex VAT SEK 142.71 ALL TAXES PAID
Design Engineering Radiator Relief For Diesel Vehicles
SEK 120.23 Ex VAT SEK 150.29 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.