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Motul Auto Cool Optimal -37C Car Antifreeze Coolant - Ready To Use

Motul Auto Cool Optimal -37C Car Antifreeze Coolant - Ready To Use


Motul Auto Cool Optimal -37C - 1 Litre

1 Litre


Motul Auto Cool Optimal -37C - 5 Litres

5 Litres


Motul Auto Cool Optimal -37C - 20 Litres

20 Litres


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Motul Auto Cool Optimal -37C Car Antifreeze Coolant - Ready To Use

General Details:

SpecificationASTM D3306
SpecificationASTM D4985
SpecificationASTM D6210
SpecificationBRB BR 637
SpecificationBRITISH STD BS 6580
SpecificationGER FVV Heft R443
SpecificationKOREAN STD KSM 2142
SpecificationMIL-Bel BT-PS-606 A
SpecificationMIL-FR DCSEA 615/C
SpecificationMIL-Italy E/L-1415b
SpecificationNATO STANDARD: S-759
SpecificationUNE STD 26-361-88/1
Oil - manufacturer recommendationAUDI TL-774 D = G 12
Oil - manufacturer recommendationAUDI TL-774 F = G12+
Oil - manufacturer recommendationCUMMINS IS
Oil - manufacturer recommendationCUMMINS IS series
for components see parts list

Addtional Images:

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Motul Auto Cool Optimal -37°C is a ready to use long life antifreeze, coolant and anti-corrosion based on monoethylene glycol using Organic Acid Technology (OAT) additives, named Organic Tech. Free from nitrites, amines, phosphates, borates and silicates.


Strongly recommended for all cooling systems including passenger cars, heavy duty, commercial, construction and agriculture vehicles, gardening, marine and stationary engines.


Down to -37°C / -35°F.

Do not dilute or mix with non-organic products.

Note: This product was formerly known as Motul Inugel Optimal -37°C.

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Provides optimal protection of cooling systems against freezing and metallic parts against corrosion
  • Protects down to -37°C / -35°F
  • Organic OAT technology provides excellent thermal exchange and improves engine cooling efficiency and prevents from boiling
  • Provides anti-corrosion properties that remain during high temperature and aging
  • Low corrosion inhibitors consumption allows extended drain intervals
  • Protects water pumps and prevents cavitation
  • Seals, hoses, pipes and plastic parts friendly
  • Nitrite, amine, phosphate, borate and silicate free
  • Contains a bitterness agent to prevent from drinking (coolants and antifreezes have a sweet taste but are harmful)


  • Cummins / Wärtsilä IS series & N14, 32-9011
  • Daimler Mercedes-Benz MB 326.3
  • Detroit Diesel Power Cool Plus
  • Deutz / MWM 0199-99-2091 (4) (8), 0199-99-1115 (2) (5)
  • Fiat 9.55523
  • Ford WSS-M97B44-D
  • GM Opel / Vauxhall / Saab GM 6277M (+B040 1065), QL 130100
  • John Deere JDMH5
  • Komatsu 07.892 (2007)
  • Liebherr MD1-36-130
  • Caterpillar / MAK A4.05.09.01
  • MAN 324 typ SNF, B&W AG D36 5600
  • Mazda MEZ MN 121 D
  • Mitsubishi JQ07913-014
  • MTU MTL 5048
  • DAF / Leyland Trucks 74002, DW03245403
  • Renault / Nissan 41-01-001/--S Type D
  • Jaguar / Land Rover CMR 8229, WSS-M97B44-D
  • Ulstein Bergen 2.13.01
  • Mack 014 GS 17009
  • Volvo Trucks 128 6083 / 002
  • Audi / VW Group (VAG) TL-774 D = G 12, TL-774 F = G 12+, 61-0-0257
  • SACM Diesel DLP799861
  • BRB BR 637
  • ASTM D3306 / D4656
  • BS 6580
  • FVV Heft R443
  • KSM 2142
  • BT-PS-606 A
  • DCSEA 615/C
  • E/L-1415b
  • NATO S-759
  • UNE 26-361-88/1


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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"Great coolant and very popular, ready to go pre mixed and meets lots of manufacturers approvals. Good for track work too."

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