Received my Blackstone oil report on my 2018 Yamaha Star Venture with the 1854 CC V-Twin engine. This report shows the last two oil samples one Yamalube 15w-50 motorcycle oil and the second one Redline 10w-40 motorcycle oil. The Redline 10w-40 will be on the left, the Yamalube 15w-50 will be in the center and the universal average will be on the right. Aluminum Redline 5 ppm Yamalube 9 ppm Universal average 7 ppm Chromium Redline 0 ppm Yamalube 0 ppm Universal average 0 ppm Iron Redline 6 ppm Yamalube 12 ppm Universal average 13 ppm Copper Redline 2 ppm Yamalube 3 ppm Universal average 7 ppm Lead Redline 0 ppm Yamalube 0 ppm Universal average 1 ppm Tin Redline 0 ppm Yamalube 0 ppm Universal average 1 ppm Molybdenum Redline 530 ppm Yamalube 380 ppm Universal average 61 ppm Nickel Redline 1 ppm Yamalube 2 ppm Universal average 1 ppm Manganese Redline 0 ppm Yamalube 1 ppm Universal average 1 ppm Silver Redline 0 ppm Yamalube 0 ppm Universal average 0 ppm Titanium Redline 0 ppm Yamalube 0 ppm Universal average 0 ppm Potassium Redline 0 ppm Yamalube 2 ppm Universal average 2 ppm Boron Redline 18 ppm Yamalube 36 ppm Universal average 81 ppm Silicone Redline 14 ppm Yamalube 18 ppm Universal average 10 ppm Sodium Redline 8 ppm Yamalube 4 ppm Universal average 59 ppm Calcium Redline 3021 ppm Yamalube 2490 ppm Universal average 2482 ppm Magnesium Redline 7 ppm Yamalube 10 ppm Universal average 194 ppm Phosphorus Redline 1855 ppm Yamalube 1789 ppm Universal average 1192 ppm Zinc Redline 2055 ppm Yamalube 1888 ppm Universal average 1392 ppm Barium Redline 1 ppm Yamalube 2 ppm Universal average 1 ppm Flashpoint in Degrees Fahrenheit Redline 440 Yamalube 425 TBN Redline 7.3 Yamalube 6.6 The Yamalube 15w-50 was run first and the Redline 10w-40 was the latest run. From looking at the wear numbers while the Yamalube had good wear numbers but the Redline out preformed the Yamalube returning lower wear numbers. I think this Yamaha 1854 CC V-Twin engine likes the 40 weight viscosity a little better than the 50 weight viscosity. I will be running Redline 10w-40 motorcycle oil from now on due to the excellent wear numbers it returned. The Redline oil change interval also went 1,317 miles longer than the Yamalube oil change and the redline still returned better wear numbers than the Yamalube 15w-50 full synthetic did. My old Victory Cross Country Tour was the same it showed better wear numbers with the 10w-40 oil then it did with 20w-50 oil. Both my old Victory and this new Yamaha are shared sump systems with gear driven primaries/transmissions. I think Yamalube is reformulating their oils now as according to their data they are lowering the Phosphorus and Zinc because the latest JASO standard is now following EPA mandates to lower those anti wear additives due to catalytic converters. I am of the opinion that I must have gotten some old stock 15w-50 Yamalube because the Yamalube site lists Phosphorus and Zinc between 800 ppm and 1,000 ppm and my report came back with much higher ppm for both Phosphorus and Zinc for the Yamalube 15w-50 sample. This new lowered Phosphorus and Zinc content might rear its head on engines using flat tappet style cam/lifter systems such as the one in this 2018 Yamaha Star Venture 1854 CC V-Twin. My reason for thinking this is because this engine uses one cam lobe and one lifter to operate two valves and two valve springs at a time for both the intake and the exhaust (four valve heads) which is likely comparable to a high performance valve spring on a single valve/valve spring system where lowered Phosphorus and Zinc have contributed to failed cams/lifters. There are currently three reported cam/lifter failures on 2018 Yamaha Star Venture 1854 CC engines, one of them the oil that was being run when it failed around the 7,000 to 8,000 mile mark was Yamalube 10w-40 conventional oil. The other two engines did not say what oil they were running in their engines But both were less than the 7,000 mile mark and one of those two was reported at 3,200 to 3,400 mile mark, the third one I don't have mileage except that it failed before the 7,000 mile mark. I have over 8,800 miles on my 2018 Yamaha Star Venture 1854 CC engine with no reported issues. I wonder if the higher ZDDP content in the oils I have chosen to run have protected my engine from suffering the cam/lifter failures the other three engines have suffered. I did break-in my engine with the factory fill Yamalube 10w-40 conventional oil and the first service was also Yamalube 10w-40 conventional oil, the conventional oil was dumped and the oil filter changed again at the 1,000 mile mark and synthetic oil was used from that point forward.