Which of the following is advisable for normal winter vehicle maintenance?

Consulting a mechanic for seasonal upkeep is advisable for normal winter vehicle maintenance because a professional can provide expert guidance on what needs attention before winter conditions impact vehicle performance. Mechanics can offer insights into crucial aspects such as tire health, fluid levels, battery condition, and windshield wiper effectiveness—all of which are vital for safe driving in winter weather. Regular maintenance checks ensure that your vehicle is prepared to handle the challenges posed by snow, ice, and colder temperatures, thus enhancing your safety on the road.

The other options do not support proper vehicle maintenance. Ignoring the owner's manual deprives you of essential information regarding the specific requirements and recommendations for your vehicle, which can lead to neglecting significant maintenance needs. Replacing all non-winter parts may be unnecessary and could result in unneeded expenses, as some parts are suitable for year-round use. Traveling without maintenance checks increases the risk of mechanical failures, especially in adverse conditions, which could compromise safety. Therefore, regular consultations with a mechanic are critical to ensuring your vehicle remains in optimal condition throughout the winter months.