Updated: 08 January 2026
As winter approaches, First Line Ltd is urging workshops to help drivers protect one of the most overlooked, yet critical, systems in modern vehicles: the engine cooling system.
Often thought of as a summertime concern, cooling system health is just as important in colder months. Modern engines run at higher operating temperatures and depend on precise thermal regulation to perform efficiently, whatever the season. That’s why First Line Ltd continues to invest in an OE-matching range of Thermostats and Water Pumps, engineered to deliver reliability, longevity and peace of mind for both technicians and motorists.
“Winter places unique stresses on engine components,” explains Kelvin Olds, Product Director at First Line. “Correct coolant flow, accurate thermal regulation and robust component design all become even more important in cold conditions. Our Water Pumps and Thermostats are designed to OE specification, giving technicians confidence when carrying out preventative maintenance or addressing faults before they escalate.”
Cooling system failures remain one of the most common causes of winter breakdowns, particularly during prolonged cold spells. In many cases, these failures are avoidable with proactive inspection and timely component replacement, rather than waiting for parts to fail and cause collateral engine damage.
Key components to monitor this winter
At the centre of the cooling system is the thermostat, which regulates engine temperature by controlling coolant flow. A sticking or slow-reacting thermostat, often caused by corrosion, age or internal debris, can prevent the engine from reaching its optimum operating temperature, or allow it to overheat. Both scenarios can significantly impact fuel efficiency, emissions and overall performance.
First Line Ltd advises workshops to check Thermostats carefully during winter servicing and replace them at the first sign of malfunction to avoid further damage.
Water Pumps are equally vital, circulating coolant throughout the engine and maintaining consistent temperatures. As vehicles age, wear to bearings, seals or impellers becomes more common, and cold weather can accelerate deterioration. First Line Water Pumps are engineered to match OE flow rates and tolerances, ensuring efficient circulation and long-term durability even in demanding conditions.
Technicians are also encouraged to inspect coolant hoses and connections thoroughly. Lower temperatures can cause rubber components to harden or crack, particularly around joins and clamps, increasing the risk of leaks and sudden pressure loss.
Finally, the condition of the coolant itself should not be overlooked. Correct coolant specification, concentration and compatibility are essential – especially as many vehicles now require long-life OAT or HOAT formulations. Discolouration, contamination or incorrect mixtures can compromise corrosion protection and heat transfer efficiency.
Raising standards in preventative maintenance
First Line Ltd’s winter message is firmly rooted in prevention rather than reaction. With UK motorists holding on to vehicles for longer and average vehicle age continuing to rise, cooling system checks should be a fundamental part of routine servicing.
“Our products aren’t just replacements, they’re preventative solutions,” Olds adds. “A thermostat or Water Pump failure in winter can quickly lead to major engine damage. By fitting First Line components, technicians can offer proactive maintenance that protects engines and reduces costly callbacks.”
With cold-weather breakdowns increasing and drivers expecting reliability all year round, First Line Ltd is encouraging workshops to use every winter service as an opportunity to inspect, advise and educate.
“The cooling system works hard in every season, but winter really tests it,” Olds concludes. “A few simple checks and the use of OE-quality First Line components can be the difference between dependable performance and a stranded vehicle. Whatever the weather, we’re here to help workshops keep engines running at their best.”
First Line Ltd supplies cooling components in both its First Line and Borg & Beck brands are ideal for workshops and installers looking for cost-effective OE premium quality products. For more information on the First Line range and Borg & Beck Cooling System components, including Thermostats and Water Pumps, visit: www.firstlineltd.com. To see what vehicles are covered by First Line’s range, please visit the online catalogue at https://webcat.firstline.co.uk/Home
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