Many car owners traditionally use silicone spray to protect rubber door seals during winter, but a recent bulletin from BMW, shared by the National Highway Traffic Safety Administration (NHTSA), recommends against this practice. The bulletin emphasizes that door seals may require proper cleaning and inspection before applying any products. Using silicone or wax can sometimes mask underlying issues that need repair, leading to further complications. Additionally, silicone sprays pose safety risks, as they are classified as aerosols that require careful handling and storage to prevent fire hazards. Vehicle owners are encouraged to inspect their door seals for dirt or wear and follow manufacturer recommendations for maintenance. This approach ensures that seals function properly and reduces the risk of damage during cold weather.