Oil gauge stuck at full

[recurve]

I use AMSOIL brand for the oil and the filters. I had been using their 6 month filters, and when I changed them, I'd add one quart of oil. At the 12 month interval I'd change the filter and do a complete oil change.

Now AMSOIL has changed their filters and they are supposed to be good for 1 year or 25,000 miles. I just installed one of these newer filters for the first time when I did the oil change.