[Nickosport]

I have motul 300 in mine. I never had any issues in cold though. I find that if you shift very deliberately into second when its cold it goes right in. No need to force it, just move the lever firmly. If you try to ease it in you're going to have a more difficult time.

The difference between the motul and the stock fluid was noticeable. The lever action was much smoother, especially from 1-2.