Welcome to NSX Prime! Respect for daily-driving your NSX. I dailied my 91 for almost 5 years, including winters! With good snow tires it's a fantastic car in the snow. And the bonus is the aluminum body doesn't rust!
Here's my quick pointers for NSX winter use:
- As noted above, use good snow/ice tires. I used Michelin X-ice 3. Make sure you pick diameters that don't mess up the TCS computer.
- Winter driving is the only time I recommend keeping the factory traction control system. It helps immensely, especially when starting from a stop at a light.
- Make sure your rear hatch defroster circuit is working and check the fuse periodically
- In temps below 32F, it's a good idea to shift gently and leave the car in 1st/2nd for the first couple of miles (assuming you're not on a main road lol). This will help circulate the cold transmission oil through the synchros and gears before you start running it through the gears as normal.
- Use a 0W full synth motor oil. 0W-30 or 0W-40 is fine. This will help with those initial cold 5 minutes and make sure oil is getting to the friction surfaces in the engine.
- Every week or so (or after a big storm), I would take the car to one of those self-wash places and really blast out the undercarriage areas and wheel wells.
Keep in mind that even though it's a Honda, your NSX is old enough to be considered a classic car. That mean many of the original components are ageing out and will need to be repaired or replaced. Especially if it's a daily, you'll need to start addressing those things to prevent being stranded somewhere.