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. 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. 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. 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. 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. 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.īoth my old Victory and this new Yamaha are shared sump systems with gear driven primaries/transmissions. 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. I will be running Redline 10w-40 motorcycle oil from now on due to the excellent wear numbers it returned. I think this Yamaha 1854 CC V-Twin engine likes the 40 weight viscosity a little better than the 50 weight viscosity. The Yamalube 15w-50 was run first and the Redline 10w-40 was the latest run.įrom looking at the wear numbers while the Yamalube had good wear numbers but the Redline out preformed the Yamalube returning lower wear numbers. Zinc Redline 2055 ppm Yamalube 1888 ppm Universal average 1392 ppmīarium Redline 1 ppm Yamalube 2 ppm Universal average 1 ppmįlashpoint in Degrees Fahrenheit Redline 440 Yamalube 425 Phosphorus Redline 1855 ppm Yamalube 1789 ppm Universal average 1192 ppm Magnesium Redline 7 ppm Yamalube 10 ppm Universal average 194 ppm Sodium Redline 8 ppm Yamalube 4 ppm Universal average 59 ppmĬalcium Redline 3021 ppm Yamalube 2490 ppm Universal average 2482 ppm Silicone Redline 14 ppm Yamalube 18 ppm Universal average 10 ppm Potassium Redline 0 ppm Yamalube 2 ppm Universal average 2 ppmīoron Redline 18 ppm Yamalube 36 ppm Universal average 81 ppm Titanium Redline 0 ppm Yamalube 0 ppm Universal average 0 ppm Silver Redline 0 ppm Yamalube 0 ppm Universal average 0 ppm Manganese Redline 0 ppm Yamalube 1 ppm Universal average 1 ppm Nickel Redline 1 ppm Yamalube 2 ppm Universal average 1 ppm Molybdenum Redline 530 ppm Yamalube 380 ppm Universal average 61 ppm Tin Redline 0 ppm Yamalube 0 ppm Universal average 1 ppm Lead Redline 0 ppm Yamalube 0 ppm Universal average 1 ppm Iron Redline 6 ppm Yamalube 12 ppm Universal average 13 ppmĬopper Redline 2 ppm Yamalube 3 ppm Universal average 7 ppm 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.Īluminum Redline 5 ppm Yamalube 9 ppm Universal average 7 ppmĬhromium Redline 0 ppm Yamalube 0 ppm Universal average 0 ppm This report shows the last two oil samples one Yamalube 15w-50 motorcycle oil and the second one Redline 10w-40 motorcycle oil. In the interim, for additional information, owners may contact Yamaha customer service at 1-80 and cite Yamaha recall number 990140.Received my Blackstone oil report on my 2018 Yamaha Star Venture with the 1854 CC V-Twin engine. Dealers will then replace the front brake switch free of charge. Once finalized, Yamaha will notify owners of the affected bikes and advise them to take the bike to a Yamaha dealer for repair. They are also waiting for the National Highway Traffic Safety Administration (NHTSA) to approve Yamaha’s owner notification letter.Īs such, Yamaha anticipates that the owner’s mailing process and the associated recall will begin sometime between January 13th and 15th. Yamaha is still determining the correct VIN ranges for the affected motorcycles and finalizing the recall technical service bulletin. In all, 18,203 bikes may have this issue. The recall spans model years from as early as 2013 through 2021. The Yamaha Nikken is part of a wide range of Yamaha bikes affected by this recall.Ī wide range of Yamaha motorcycles may have this defect.
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