Tyre sealant can freeze, but OKO formulas are made with anti-freeze, and each one has a published freezing point. They range from -8 °C to -12 °C for OKO Original Off-Road down to -25 °C to -30 °C for OKO Original Truck & Bus. If your machines regularly sit in colder conditions than that, lower-freezing versions of the Off-Road, Truck & Bus and Mining formulas are supplied on request.
Freezing points for every OKO formula
These figures come from each product's technical data sheet. They are given as a band rather than a single number.
| Formula | Built for | Freezing point | Lower-freezing version |
|---|---|---|---|
| OKO Original Off-Road | Tractors, harvesters, loaders, forklifts | -8 °C to -12 °C | Supplied on request |
| OKO Original Mining | Haul trucks, loaders, heavy plant | -15 °C to -19 °C | Supplied on request |
| OKO Original 4x4 & Van | 4x4s, vans, motorhomes, caravans | -16 °C to -24 °C | Not listed |
| OKO Original On-Road Motorcycle | Tubeless motorcycle, scooter and moped tyres | -16 °C to -24 °C | Not listed |
| OKO Original Truck & Bus | Trucks, buses, coaches, trailers over approx. 5 tonnes | -25 °C to -30 °C | Supplied on request |
| OKO Premium Tyre Care Lifelong (conditioner) | Mining, construction and large farm tyres | -20 °C to -40 °C | Not listed |
Because each figure is a band, plan around the warmer end of it. If the coldest nights where your vehicles are parked come close to that figure, talk to us before you fit.
Which formula for cold-weather work?
Farms and contractors
OKO Original Off-Road has the highest freezing point in the range, at -8 °C to -12 °C. For most tractors, loaders and trailers it is still the right formula, because it is the one built for slow-moving off-road machines and seals punctures up to 12mm. If your yard regularly sees frosts harder than that, ask for the lower-freezing version rather than switching to a road formula.
Truck, bus and coach fleets
OKO Original Truck & Bus has the lowest freezing point of the sealants, at -25 °C to -30 °C, with colder versions on request. Fleets running through hard winters are already well covered. See our guide to cutting puncture downtime in truck and bus fleets.
Mines and quarries
OKO Original Mining freezes at -15 °C to -19 °C, and lower-freezing versions are available on request for colder sites. OKO Premium Tyre Care Lifelong, the conditioner often used alongside it on the largest tyres, has the widest band of all: -20 °C to -40 °C.
Motorcyclists and 4x4, van and motorhome owners
Both road formulas freeze at -16 °C to -24 °C. OKO's guidance for the On-Road Motorcycle formula is that it will not freeze in normal winter conditions, so it stays liquid and keeps working through the cold. The 4x4 & Van formula shares the same freezing point.
Storing sealant over winter
How you store the drum or bottle matters as much as what is in the tyre.
- Store containers in a cool, dry place away from direct sunlight. Lifelong should be stored indoors.
- Keep closures on containers when they are not in use.
- The 4x4 & Van, On-Road Motorcycle and Truck & Bus formulas are stable and non-separating, so no shaking is needed before use.
- After using the drum pump, flush it with clean water so sealant does not dry inside it.
Once it is in the tyre
Inside the mostly sealed environment of the tyre, OKO stays liquid for the tyre's (extended) life. As soon as the wheel turns, centrifugal force spreads it across the tread, and it works whenever the vehicle is moving. Fitting in winter follows the same steps as any other time of year; our guide on how to put sealant in a tyre covers the bottle, injector and drum pump. For questions about how long a fill lasts, read how long tyre sealant lasts in a tyre.
The amount you need does not change with the season. Use the dosage calculator to get the right dose for your tyre size and formula.
Quick answers
Does OKO tyre sealant freeze?
Each OKO formula has a published freezing point, from -8 °C to -12 °C for Off-Road down to -25 °C to -30 °C for Truck & Bus. Lower-freezing versions of Off-Road, Truck & Bus and Mining are supplied on request.
Which OKO formula has the lowest freezing point?
Among the sealants, OKO Original Truck & Bus, at -25 °C to -30 °C. The Lifelong tyre conditioner, which is not a sealant, has a band of -20 °C to -40 °C.
Will motorcycle tyre sealant freeze in winter?
Not in normal winter conditions. OKO On-Road Motorcycle has a freezing point of between -16 °C and -24 °C, so it stays liquid and working through the cold.
How should I store tyre sealant in winter?
Keep containers closed, in a cool, dry place away from direct sunlight. Store Lifelong indoors.
Not sure which formula suits your climate? Contact us about lower-freezing versions. Our online shop delivers in the UK only; elsewhere, find a distributor near you.
