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Price

¥605 ¥8983

Coolant Additives

Showing 19 of 19 items
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Red Line Water Wetter Super Coolant
 
 
JP¥2,638.00 Ex VAT JP¥2,638.00 INC VAT
Buy now, pay later with Klarna
Ring UV Dyes
 
 
From JP¥605.00 Ex VAT From JP¥605.00 INC VAT
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Red Line Supercool Fortified With Water Wetter (Premix)
 
 
JP¥6,747.00 Ex VAT JP¥6,747.00 INC VAT
Buy now, pay later with Klarna
Red Line Supercool Performance Coolant With Water Wetter
 
 
JP¥4,498.00 Ex VAT JP¥4,498.00 INC VAT
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Red Line Supercool Fortified With Water Wetter (Concentrate)
 
 
JP¥8,780.00 Ex VAT JP¥8,780.00 INC VAT
Buy now, pay later with Klarna
VP Racing Madditive Cool Down
 
 
JP¥2,076.00 Ex VAT JP¥2,076.00 INC VAT
Buy now, pay later with Klarna
Millers Oils Extra Cool
 
 
JP¥2,066.00 Ex VAT JP¥2,066.00 INC VAT
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Design Engineering Radiator Relief
 
 
JP¥1,531.00 Ex VAT JP¥1,531.00 INC VAT
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Millers Oils Red Alpine Anti Freeze Summer Coolant
 
 
From JP¥638.00 Ex VAT From JP¥638.00 INC VAT
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VR-12 Coolant Additive
 
 
JP¥1,946.00 Ex VAT JP¥1,946.00 INC VAT
Buy now, pay later with Klarna
Design Engineering Radiator Relief Flush
 
 
JP¥1,548.00 Ex VAT JP¥1,548.00 INC VAT
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Design Engineering Chill Charger
 
 
JP¥1,548.00 Ex VAT JP¥1,548.00 INC VAT
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Evans Vintage Cool 180 Degree (Waterless Engine Coolant)
 
 
From JP¥4,308.00 Ex VAT From JP¥4,308.00 INC VAT
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Lucas Oil Super Coolant
 
 
JP¥2,175.00 Ex VAT JP¥2,175.00 INC VAT
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Mishimoto Radiator Coolant Liquid Chill
 
 
JP¥3,111.00 Ex VAT JP¥3,111.00 INC VAT
Buy now, pay later with Klarna
Motul Mocool Coolant Additive
 
 
JP¥2,102.00 Ex VAT JP¥2,102.00 INC VAT
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Frost Stay Cool Coolant Additive
 
 
JP¥2,427.00 Ex VAT JP¥2,427.00 INC VAT
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Design Engineering Heater Hotter
 
 
JP¥1,548.00 Ex VAT JP¥1,548.00 INC VAT
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Motul Auto Cool G13 Ultra Coolant (Concentrate)
 
 
From JP¥8,199.00 Ex VAT From JP¥8,199.00 INC VAT
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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.