Can I use 4H part-time for extended periods in snowy conditions? Should I avoid sharp turns?

4H AUTO is fine. It's still rear-wheel drive, but will switch to four-wheel drive when needed.

If you don't have 4A, be cautious. With 4A, the front and rear are typically soft connections, while without 4A, they are usually hard connections.

Drive casually, it's not that fragile.