This is my first UOA ever and the test was done by Blackstone. I couldn't find any UOA's for Yamaha Liners so here it is. I think it looks good but iron seems kind of high to me even though it is slightly below universal averages of 19. This is my second oil change on T6 and using PureOne oil filter PL14612 and K&N drop-in air filter. My first T6 oil went for 4,986 miles. I have no issues with clutch or shifting (smooth as butter). Since switching to the T6, it has gotten rid of this wood knock sound when running the engine below 2K rpm's going up a slight incline. I know I should not be doing this and it is not my normal practice. I don't know what type of oil was used previously since I bought it used. I'm guessing a Yamalube dino oil. Blackstone Comments: We're glad to see you haven't changed this oil yet because it's still good for more use. Universal averages show normal wear metals after about 4,700 miles on the oil. Your oil hasn't been in place as long and that likely accounts for the generally lower-than-average metals. There was a little fuel present in this sample, though some fuel is common for bikes so 0.8% isn't a big concern. Insolubles read low at a trace, showing good combustion and oil filtration. The TBN is fine at 6.6 since 1.0 is too low. Leave this oil in use 2,000 more miles before resampling.
Oil Shell Rotella T6 5W-40 Miles in Use 3,557 Miles 13,643 Sample Taken 9/28/2011 Aluminum 8 Chromium 0 Iron 16 Copper 8 Lead 1 Tin 0 Molybdenum 68 Nickel 3 Manganese 1 Silver 0 Titanium 0 Potassium 0 Boron 48 Silicon 14 Sodium 7 Calcium 1073 Magnesium 1474 Phosphorus 1076 Zinc 1506 Barium 1 SUS Viscosity @210F 68.7 cSt Viscosity @100C 12.62 Flashpoint in F 360 Fuel % 0.8 Antifreeze % - Water % 0.0 Insolubles % TR TBN 6.6