I’ve been experimenting with a winter-grade coolant mix that uses a higher percentage of glycol, and it’s made a noticeable difference during frosty mornings. A couple of years back, I switched to a synthetic lubricant known for maintaining viscosity even at lower temps, and my engine sounded quieter overall. Also, adding a moisture-absorbing additive to the fuel system might help combat condensation in colder climates. Definitely worth trying if you’re preparing for severe seasonal shifts!