Why does engine overheat pulling horse trailer?

Engine overheating while pulling a horse trailer can occur due to several factors, including increased load on the engine, inadequate cooling system function, or insufficient engine oil. The added weight of the trailer puts extra strain on the engine, leading to higher temperatures. Additionally, if the radiator is clogged or the coolant level is low, it may not effectively dissipate heat. Regular maintenance and ensuring proper towing capacity can help prevent overheating issues.