I am new to this forum and appreciate you taking the time to read this. Bought this bike about 6 mos ago. Had about 65k miles, but was very well maintained by the previous owner. Cold startup oil pressure is about 30lbs at 2500 rpm and idle is about 10lb. Once the bike is warmed up, at idle the pressure is barely readable, but once underway goes back up to 30lbs. It will stay like this for about 45 minutes of riding, and then drop to about 15 to 20 lbs at cruising speed (above 2500 rpm). I recently installed a HD oil cooler and am running HD 20/50 oil. As with all things mechanical, regardless of how well taken care of, parts ware out. I'm wondering if this could be the source of the oil pressure dropping. Any thoughts/ideas/etc. would be greatly appreciated. Thanks again for allowing me to post.