I pulled the bulb holder out today (should have done that earlier), here is what I found:
1. There are 5 bulbs, not 4. One is a small one, is that the turn signal, or is it the parking/standing light? The other 4 all look the same size.
2. All bulbs are clear
3. Seems like all except the small one are Osram 7506L 12 V 21W. Look like incadescent, not halogen.
4. I found a burnt bulb in the left (driver side), all the bulbs on the right (passenger) look OK. I have ordered replacement Osram 7506, will post back if replacing the one burn one does it. But still strange why it says right side is the problem when the burnt bulb is on the left.
Posting this in case it helps someone in a similar situation