Choosing the right coolant is crucial for motorcycle longevity, engine efficiency and frost protection across UK seasons. This guide highlights five reliable options from reputable brands, with quick comparisons to help you decide what suits your bike best. All selections are compatible with common ethylene glycol or organic acid technology (OAT) formulations and are suitable for light aluminium engine components often used in motorcycles.
| Product | Brand | Key Feature |
|---|---|---|
| DYNAMAX Motoforce Coolant | DYNAMAX | Ready-mix, -37°C protection, year-round antifreeze |
| ERRECOM Blue Coolant | ERRECOM | Nap Free inhibitor package, G11, EU-approved |
| ERRECOM Red Coolant | ERRECOM | Fluorescent, OAT, G12, versatile use |
| Holts HAFR0008B Coolant | Holts | Long-life, -37°C protection, OEM suitability |
| Granville Rapid Cool Blue | AXpower | All-season, rust and corrosion protection |
DYNAMAX Motoforce Ready Mix Coolant
The DYNAMAX Motoforce Coolant -37 is a coolant based on ethylene glycol, designed for light aluminium alloy engines used in motorcycles. It provides frost protection and anti-corrosion performance across seasons, emphasising effective heat transfer. The yellow formulation is compatible with other monoethylene glycol or propylene glycol-based coolants and serves as a complete replacement for glycol-based coolants. This ready-to-use solution supports broad engine protection standards and is suitable for maintaining modern bike cooling systems in the UK climate.
ERRECOM Blue Coolant For Rads
ERRECOM Blue Coolant is a blue coolant prepared as a ready-to-use formulation with a Nap Free inhibitor package containing no amines, phosphates, or nitrites. It is a G11 specification and is intended for radiator protection. The product requires referencing the vehicle manual to confirm appropriate standard (G11, G12, G12+, G12++, or G13). This option suits riders seeking a low-amine, phosphate-free solution with broad compatibility as a topping or replacement for existing ethylene glycol-based systems.
ERRECOM Red Coolant G12
ERRECOM Red Coolant is a red, fluorescent coolant formulated with organic-based OAT inhibitors and a G12 standard. It is supplied as Ready to Use and covers a broad temperature range, suitable for many motorcycle cooling systems. The product notes emphasize verifying specifications against the vehicle owner’s manual before purchasing, ensuring compatibility with G11, G12, G12+, G12++, or G13 standards. This coolant is designed for reliable corrosion prevention and heat management within the UK’s varied climate.
Holts HAFR0008B Antifreeze Coolant
Holts HAFR0008B is a ready-to-use antifreeze coolant offering long-life protection. It claims compatibility with all Ethylene Glycol-based coolants and is designed for vehicles requiring OAT (Organic Acid Technology) coolant. The pack includes a spout for easy pouring and notes suitability for BMW, Mini, Mercedes-Benz, and Smart applications where the GS 9400 or MB 326.0 standards are required. It is positioned as a versatile option for topping up or flushing and refilling cooling systems in motorcycles and light vehicles alike.
Granville Rapid Cool Blue 1L
Granville Rapid Cool Blue is a 1L ready-to-use engine coolant designed for cars and motorcycles, offering protection against overheating, freezing, and corrosion. The product emphasises year-round reliability and features corrosion resistance for radiators and water pumps. While marketed for cars, many riders use it in motorcycle systems where compatible with the vehicle’s cooling specifications. It provides a practical option for riders seeking a straightforward, all-season coolant.
ERRECHOME Green Coolant G12
ERRECHOME Green Coolant is a G12-rated, ready-to-use green coolant with an organic-based OAT inhibitor package. It is intended for radiator protection and requires referencing the car owner’s manual for the suitable standard (G11, G12, G12+, G12++, or G13). This option offers a robust approach to corrosion protection and heat transfer for motorcycle cooling systems, particularly where G12-compatible coolants are recommended by the manufacturer.
Buying Guide
- Standard compatibility: Confirm the recommended standard for your bike’s cooling system (G11, G12, G12+, G12++, G13, or a blue/grey ethylene glycol variant). Using an incompatible coolant can affect corrosion protection and heat transfer.
- Inhibitor chemistry: Consider inhibitors (Nap Free, OAT) and whether you prefer phosphate-free or traditional chemistries. Some riders opt for OAT formulations for longer life, whereas others choose classic inorganic/organic mixes for broad compatibility.
- Ready-to-use vs concentrates: Ready-to-use formulations reduce mixing errors and simplify maintenance. If you choose concentrates, ensure you mix to the correct strength and account for bike cooling system capacity.
- Material compatibility: Verify compatibility with aluminium alloy engines and radiators common in motorcycles, to prevent corrosion or etching.
- Maintenance schedule: Follow manufacturer guidelines for replacement intervals and flushing procedures, especially after long-term storage or visible coolant degradation.
- UK climate considerations: In the UK, frost protection and anti-corrosion performance across seasons are key. Choose a coolant rated for low temperatures and stable heat transfer under varying riding conditions.
- OEM recommendations: When in doubt, consult the motorcycle’s service manual for the recommended coolant specification and any manufacturer-approved brands.