OEM drain interval recomendations is 5,000 miles with synthetics. AMSOIL is double. Total miles on the bike at 2nd UOA: 19,315. Oil change date was 8/27/2008. I had 2 annalysis done one at 7,374 miles on oil change and one at 9900 miles on oil change. Iron 22/30 Aluminum 4/5 copper 23/27 Lead 1/1 Tin 2/1 Silicon 4/5 sodium 31/30 Potassium 1/2 Molybdenum 41/41 Manganese 8/19 Magnesium 24/24 Calcium 3100/3285 Phosphorus 1132/1164 Zinc 1404/1442 *Note all other minerals at 0* Fuel .2%/<1% Soot<.1%/<.1% Water <.1/<.1 Vis 100c 16.6/17.1 TBN 6.68/6.77 Oxida 27/27 Nitra 16/17 *Note Data flagged for observation only* I sent results back to AMSOIL Tech support and was told to change filter and go another 10,000 miles. Will have another UAO at 15,000 miles and keep ya'll posted. Three questions: 1) should I be worried about the manganese and magnesium? 2)Is it possible to bring these down? 3)My fuel levels were a bit high at the second check and I think the problem is from the new exhaust system installed. Will Dyno help me understand this and fix it and is this a major concern?